Malicious Uses and Abuses ofArtificial Intelligence
Trend Micro Research
United Nations Interregional Crime and Justice Research Institute (UNICRI)
Europol’s European Cybercrime Centre (EC3)TREND MICRO LEGAL DISCLAIMER
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Contents

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4
Introduction

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6
The Present State of Malicious
Uses and Abuses of AI

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30
Future Scenarios of Malicious Uses
and Abuses of AI

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50
Recommendations

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Case Study:
A Deep Dive Into Deepfakes

internet.
Published byTrend Micro Research
Written by

Vincenzo Ciancaglini, Craig Gibson,and David Sancho
Trend Micro Research

Odhran McCarthy and Maria Eira
UNICRI

Philipp Amann and Aglika Klayn
Europol’s European Cybercrime Centre (EC3)Management

Robert McArdle
Trend Micro Research

Irakli Beridze
UNICRI

Philipp Amann
Europol’s European Cybercrime Centre (EC3)Stock images used under license from Shutterstock.com

66
Conclusion

The emergence of new technologies is shaping the world in an increasing range of sectors.
Though there are many ways to define these technologies and their varying functions, it ispossible to sum them up briefly.1, 2, 3 Artificial intelligence, (AI) in particular, is ubiquitous in
its applications and holds great promise to address a number of complex global challenges.
By capitalizing on the unprecedented quantities of data, AI has shown potential fromnavigation and content recommendations to detecting cancer more accurately than humanradiologists.
AI is a subfield of computer science (with many cross relationships to other disciplines)
dedicated to the theory and development of computer systems that can perform tasks
normally requiring human intelligence, such as visual perception, speech recognition,translation between languages, decision-making, and problem-solving. Machine learning(ML), itself a subfield of AI, consists of algorithms that use statistical techniques to give
computer systems the ability to “learn” from data — that is to say, to progressively improve
performance on a specific task. Compared to other computer software, ML algorithms do
not require explicit instructions from humans but rather extract patterns and learn implicit
rules from a considerable number of examples.
While AI and ML algorithms can bring enormous benefits to society, these technologies canalso enable a range of digital, physical, and political threats. Just as the World Wide Webbrought a plethora of new types of crime to the fore and facilitated a range of more nontraditional ones, AI stands poised to do the same.4, 5 In the continuous shift from analogue
to digital, the potential for the malicious use of new technologies is also exposed.
Hence, while this report looks at the present state of both AI and ML technologies, it alsoseeks to predict the possible ways that criminals will exploit these technologies in the
future — a task that though seemingly daunting, is paramount for the cybersecurity industry
and law enforcement to undertake in the never-ending challenge to always stay one stepahead of criminals.

Introduction
In the dynamic world of technology and computerscience, AI continues to offer a wide range

Artificial intelligence (AI) systems areof possible applications for enterprises andsoftware (and possibly also hardware)individuals. Unfortunately, the promise of more

systems designed by humans that, given aefficient automation and autonomy is inseparable

complex goal, act in the physical or digitalfrom the different schemes that malicious actors

dimension by perceiving their environment

are capable of.

through data acquisition, interpreting thecollected structured or unstructured data,

For instance, criminals can use AI to facilitate andreasoning on the knowledge, or processing

improve their attacks by maximizing opportunities

the information, derived from this datafor profit in a shorter time, exploiting new victims,

and deciding the best action(s) to take toand creating more innovative criminal businessachieve the given goal. AI systems canmodels while reducing the chances of being

either use symbolic rules or learn a numericcaught. Additionally, as AI-as-a-Service becomesmodel, and they can also adapt theirmore widespread, it will lower the barrier to entry

behavior by analyzing how the environment

by reducing the skills and technical expertiseis affected by their previous actions.6

needed to employ AI.
Criminals and organized crime groups (OCGs)(The British spelling "analysing" is used in thereference for this definition.)

have been swiftly integrating new technologies
into their modi operandi, thus creating not only constant shifts in the criminal landscape worldwide,
but also creating significant challenges for law enforcement and cybersecurity in general.7 The Crimeas-a-Service (CaaS) business model, which allows non-technologically savvy criminals to procure
technical tools and services in the digital underground that allow them to extend their attack capacity
and sophistication,8 further increases the potential for new technologies such as AI to be abused bycriminals and become a driver of crime.9, 10, 11
Building knowledge about the potential use of AI by criminals will improve the ability of the cybersecurity
industry in general and law enforcement agencies in particular to anticipate possible malicious andcriminal activities, as well as to prevent, respond to, or mitigate the effects of such attacks in a proactive
manner. An understanding of the capabilities, scenarios, and attack vectors is key to enhancing
preparedness and increasing resilience.

4 | Malicious Uses and Abuses of Artificial IntelligenceIn line with the goal to contribute to the body of knowledge on AI, this report, a joint effort among Trend
Micro, the United Nations Interregional Crime and Justice Research Institute (UNICRI), and Europol,
seeks to provide a thorough and in-depth look into the present and possible future malicious uses andabuses of AI and related technologies.
The intended audience of this report includes cybersecurity experts and practitioners, law enforcement,
innovation hubs, policy-makers, and researchers.
The report can also be leveraged by members of this audience as a thinking space for ideas and a callfor greater attention to the possible malicious uses or abuses of AI.
The findings contained in the report are based on contributions from the three entities. They have beencombined with input collected during a focused workshop in March 2020 that was organized by Europol,
Trend Micro, and UNICRI. Workshop participants included members from the Joint Cybercrime Action
Taskforce (J-CAT),12 the International Criminal Court,13 and several members of Europol’s European
Cybercrime Centre (EC3) Advisory Groups.14
This report uses an important distinction thatshould be noted from the outset: namely, thedistinction between malicious uses and abusesof AI. The “uses” in “malicious AI uses” refers to
instances whereby criminals might employ AI
systems to further their attack objectives — forMachine learning (ML) is a subset of AI,
where algorithms are trained to infer certain
patterns based on a set of data in order todetermine the actions needed to achieve agiven goal.15

example, by using ML to automate cyberattacks
and improve malware. On the other hand, the “abuses” in “malicious AI abuses” refers to instanceswhere criminals might try to attack and exploit existing AI systems to break or circumvent them — forexample, by hacking smart home assistants.
With this distinction in mind, we framed the report around two main components: present AI malicious
use or abuse, for which there are documented cases and research, and future malicious use or abuse forwhich there is no evidence or literature yet. Nonetheless, we believe that on the basis of technologicaltrends and developments, future uses or abuses could become present realities in the not-too-distantfuture. To prepare for these uses or abuses, speculative scenarios that are likely to happen must beconceptualized. To ground the report with regard to this, we examine current trends in undergroundforums, as these can provide insights on what the malicious abuse of the AI threat landscape might look
like in the near future.
With respect to present malicious uses or abuses, possible countermeasures to combat the malicious
uses of AI are also identified here. It should be emphasized, however, that these countermeasures are
not exhaustive and are only suggestive of one or more possible avenues for combatting the specific use
or abuse identified.
Finally, through a case study at the end of this report, we take a closer look at deepfakes, a specificuse of AI that has received widespread media attention and presents considerable potential for a rangeof malicious and criminal purposes. We also include an overview of the technological aspects of somespecific use cases that are identified in the report, alongside further technical content, in this case study.
5 | Malicious Uses and Abuses of Artificial Intelligence

The Present State of Malicious
Uses and Abuses of AI
A significant leap forward in AI has been observed in recent years. While this paper outlines possible
future developments of malicious uses and abuses of AI technology, a prediction like this has value only
when it is properly grounded in the present.
To this end, this first section presents the current developments of AI in the scope of possible malicious
uses and abuses by covering research outcomes, proofs of concept, or discussions among criminals,
provided that they are documented and verifiable. The section includes both cases of criminals exploiting
AI technology for their own gain and criminal attempts to abuse legitimate AI systems that are readily
available for malicious AI abuses.

AI Malware
The use of AI to improve the effectiveness of malware is still in its infancy. Research is still carried out
at the academic level and attacks are mostly theoretical and crafted as proofs of concept by security
researchers. Nonetheless, the AI-supported or AI-enhanced cyberattack techniques that have beenstudied are proof that criminals are already taking steps to broaden the use of AI. Such attempts therefore
warrant further observation to stop these current attempts and prepare for future attacks as early as
possible before these become mainstream.
Currently, malware developers can use AI in more obfuscated ways without being detected by researchers
and analysts. As a consequence, it is only possible to search for observable signs that might be expectedfrom AI malware activity. In fact, one type of malware-related AI exploit involves AI-based techniques
aimed at improving the efficacy of “traditional” cyberattacks.
For example, in 2015, a demonstration on how to craft email messages in order to bypass spam filters
was made.16 This system, as demonstrated, uses generative grammar capable of creating a large datasetof email texts with a high degree of semantic quality. These texts are then used to fuzz the antispam
system and adapt to different spam filters in order to identify content that would no longer be detectedby the spam filters.

6 | Malicious Uses and Abuses of Artificial IntelligenceIn 2017, during Black Hat USA, an information security conference,17 researchers demonstrated how to
use ML techniques to analyze years’ worth of data related to business email compromise (BEC) attacks, aform of cybercrime that uses email fraud to scam organizations in order to identify potential attack targets.
This system exploits both data leaks and openly available social media information. Notably, based on its
history, the system can accurately predict if an attack will be successful or not.
At the same security conference, researchers introduced AVPASS,18 a tool designed to infer, for any given
antivirus engine, its detection features and detection rule chain. The tool then uses this inference todisguise Android malware as a benign application. It should be emphasized that AVPASS achieved a 0%
detection rate on the online malware analysis service VirusTotal with more than 5,000 Android malware
samples. In other words, AVPASS created operationally undetectable malware.
At present, antivirus vendors also look at ML as
their tool of choice for improving their malware
detection techniques, thanks to its ability togeneralize new types of malware that have neverbeen seen before. However, it has been proventhat ML-based detection systems can be trickedby an AI agent designed to probe and find weak
spots.19 Researchers, for instance, have been able
to craft malware with features that allow it to remain
undetected even by ML-based antivirus engines.
The system uses reinforcement learning to develop

Reinforcement learning refers to thetraining

that

an

agent

undergoestolearn a particular behavior in a dynamic
environment. Since the agent is not oriented
beforehand on the different outcomes forevery action that it can take, it must rely on
both the knowledge that it gains throughexperience and the rewards that it receives
for every action that it takes in order to learn
the behavior.20

a competitive, game-based technique between
itself and the antivirus detector. It also selects functionality-preserving features of a malicious Windows
file and introduces variants that increase the chances of a malware sample passing undetected.
Finally, AI can also enhance traditional hacking techniques by introducing new ways of performing attacks
that would be difficult for humans to predict. At DEF CON 2017, one of the largest underground hacking
conventions, participants Dan Petro and Ben Morris presented DeepHack,21 an open-source AI tool aimed
at performing web penetration testing without having to rely on any prior knowledge of the target system.
DeepHack implements a neural network capable of crafting SQL injection strings with no information
other than the target server responses, thereby automating the process of hacking web-based databases.
Following a similar approach, DeepExploit22 is a system that is capable of fully automating penetration
testing by using ML. The system interfaces directly with Metasploit, a penetration testing platform, forall the usual tasks of information gathering and crafting and testing an exploit. However, it leverages areinforcement learning algorithm named Asynchronous Actor-Critic Agents (AC3)23 in order to learn first(from openly exploitable services such as Metasploitable) which exploit should be used under specificconditions, before testing such conditions on the target server.

7 | Malicious Uses and Abuses of Artificial IntelligenceIn the previously described attacks, AI helps to improve and optimize techniques traditionally used bycriminals. Conversely, the second kind of attacks focuses on subverting existing AI systems in order toalter their capabilities or behavior.
For instance, IBM researchers recently presented a novel approach to exploiting AI for malicious purposes.
Their system, DeepLocker,24 embeds AI capabilities within the malware itself in order to improve its evasion
techniques. This is accomplished by employing a general weakness of most of AI algorithms — that is tosay, their lack of explicability — to the advantage of the system.
By their own nature, ML algorithms turn out to be, from an implementation point of view, nothing morethan multiplications of factors and matrices, whereas an array of factors constituting the input is multipliedby one or several matrices. In turn, the value of these matrices is determined in the training phase of thealgorithm, thus leading to the output value of the said algorithm. This applies to almost all supervisedmachine learning algorithms, with very few exceptions. Because of this, it is generally very hard to explain,in simple language, why a machine-learning algorithm trained with a given dataset would take a specificdecision. To illustrate, if we take the example of a spam filter relying on deep learning to identify spam
content, it would be very difficult to explain why it flags some content as spam. Likewise, it would bechallenging to debug and fix a false positive in which a legitimate message is erroneously marked as
spam.
Instead, one normally assumes that the algorithm is a “black box” and that the system design revolves
around picking the right black box, tuning its functioning parameters, and finding the proper training set
for the given problem.
DeepLocker exploits this inner inscrutability to its own advantage: Malware generally employs multiple
techniques to evade detection, from payload obfuscation and encryption, to special checks to frustrate
analysis. For example, in targeted attacks, malware often performs specific checks in order to activate
only when running on the target machine. These checks, however, are the very last clue that can giveaway that a piece of software is a targeted malware and can serve as a signature for the malware itself.
DeepLocker manages to obfuscate this last piece of malicious behavior by implementing the said checks
through a deep neural network (DNN), thus exploiting the aforementioned “inexplicable” nature of thealgorithm to mask those checks as simple mathematical operations between matrices.
As a result, it becomes harder to reverse-engineer the malware behavior or even to trigger it in a test
environment, since the trigger conditions are never explicitly encoded in the malware. Consequently,
analysis also becomes that much more difficult. DeepLocker, for example, uses many attributes to identify
the target machine, including software environment, geolocation, and even audio and video, thus adding
to the difficulty in predicting and identifying the trigger conditions for the malware to execute.

8 | Malicious Uses and Abuses of Artificial IntelligenceDeepLocker brings the obfuscation one step further: Its neural network does not output an explicit
activation value. Neither does it answer the question, “Am I on the target machine?” with “Yes” or “No.”
Rather, it outputs a decryption key that can be used, when the input conditions are matched, to decrypt
the remaining malware payload.
In this way, any explicit information about the malware target is obfuscated in the form of matrix factors,
making it next to impossible to reverse-engineer and identify the target. Until the very moment that themalware sits on the target, the rest of its code is fully encrypted and inscrutable.
It is worth noting that attacks such as DeepLocker are difficult to stop as a defender would not know what
to look for until the malware is completely decrypted. Similarly, on the target machine, DeepLocker can
be stopped by detecting the attack only once it is decrypted and about to run. An antivirus signature inmemory, a behavioral rule, or a firewall rule, would thus be able to see the attack as it happens. Nonetheless,the problem could be much worse if the malware were to be analyzed on a test machine, or if an engineer
were to decide whether a dataset is malicious. In such cases, DeepLocker would not decrypt correctly
and as a result, the engineer would not be able to see the malicious functions for a proper analysis. If
the malware is never correctly analyzed, those in-memory or behavioral rules would thus never be made.
Meanwhile, attacks such as DeepHack and DeepExploit are similarly difficult to detect. Regardless, awell-configured application firewall can help to defend a network against these attacks and even disallow
further connections from the AI-enabled attack.

AI Malware at Large
In order to see if malware writers are already using currently available ML algorithms, we used the following
approach:1.

We typified popular ML engines and created detection rules using YARA,25 the industry standard forrule-based behavioral detection of files such as malware.

2. We ran RetroHunt searches with those rulesets on VirusTotal to see if any of those engines had been
somehow modified or tampered with.
3. We examined results for those files with traces of malicious code. To avoid false positives, we needed
at least two detections from different antivirus engines.

9 | Malicious Uses and Abuses of Artificial Intelligence

The most popular and easily accessible ML engines are the following:•

TensorFlow + Keras•

RapidMiner•

PyTorchBoth TensorFlow and PyTorch are open-source projects written in Python. Since they are so easily
modifiable, the defined YARA rules are very generic and look specifically for recognizable strings in text
files or executables. RapidMiner, on the other hand, is a Java-based engine; therefore, the corresponding
YARA rule looks for certain relevant strings within Java Archive (JAR) files.
Our search for malicious TensorFlow-, RapidMiner-, or PyTorch-related files did not yield any files. The
first attempts resulted in several files that were later proven to be false positives. After refining the initialrules and looking for certain strings related to each of these frameworks, we did not obtain any additional
results.
In the case of TensorFlow and PyTorch, the rules are very similar. We looked for Python files (with extension.py) or for portable executables (PE) to account for compiled Python binary files on Windows platforms.
The rules, as further detailed in Appendix A, are designed to match certain strings that were identified to
be in the open source code of their respective projects.
Although it is impossible to prove for certain that malware using ML does not exist, the search for malicious
files that resemble popular ML frameworks did not provide any results at the point of writing.

Abusing AI Cloud Services
It is important to note that ML algorithms do not necessarily need to run on the same host machine where
the malware runs. Another approach to detect if malicious actors have already started leveraging ML
when developing malware is to check, therefore, whether a particular malware connects to cloud-based
AI services.
To follow this approach, we compiled a list of all AI services offered by major cloud providers, including
Amazon AWS, Microsoft Azure, Google Cloud, Alibaba Cloud, Yandex, and others. All of these havestarted offering AI services in recent years: For example, Amazon, through its AWS platform, offers
image recognition services (Amazon Rekognition), unstructured text analytics (Amazon Comprehend), or
named entity extraction (Amazon Textract), with competitors offering similar services of their own. Eachof these services can be accessed via an HTTPS connection to a specific endpoint URL, which uses a
specific pattern. For example, all services from Amazon’s AWS platform contain “aws.amazon.com” inthe hostname and the name of the service in the path.

10 | Malicious Uses and Abuses of Artificial IntelligenceUsing those patterns, we performed an extensive search within Trend Micro’s databases, focusing on two
datasets in particular:•

The first dataset contains behavioral information of malware samples that have been analyzed in the
past.

•

The second dataset contains anonymized reports of connections performed by malicious software asdetected by Trend Micro’s antivirus software.

By using these patterns and focusing on the two datasets, it was possible to check if any novel malware
samples found on the internet connects to AI cloud services and why, or if any malicious connection to
said services that come from a malicious software on a victim’s machine had been detected previously.
As of writing this report, our search did not identify any traces of malicious software exploiting cloudservices. There are two possible reasons for this lack of identification. First, scaling matters (from thepoint of view of the malicious actor) might result in higher costs. Second, without proper measures, themove to exploit cloud services might increase chances of the malicious actor being revealed.
Nevertheless, cloud services should be monitored for this kind of connection, since the next iteration of
AI malware targeting them might still emerge.

Abusing Smart Assistants
An alternative approach to attacking AI algorithms is to target AI assistants by either exploiting theirpresence in households or abusing their development model. In particular, an AI assistant could betargeted by developing adversarial systems or polluting datasets.
An example of an adversarial system is elaborated on in the Trend Micro paper “The Sound of a Targeted
Attack,”26 where an attacker could exploit exposed smart speakers to issue audio commands to a nearby
smart assistant, such as Amazon Alexa or Google Home. If a speaker is connected to the internet, itsvulnerabilities could be exploited, causing it to play an audio file hosted on an arbitrary web address
set up by the attacker. It is also possible for the file to contain speech that issues a specific commandto the nearby smart assistants. Additionally, a stealth attack might use an issued command that is not
perceivable by the human ear.27 Exposed devices can be easily found using services such as Shodan, asearch engine for internet-connected devices and systems.
The possibility of such attacks is further exacerbated by the fact that smart assistants are often in control
of home automation systems. In “Cybersecurity Risks in Complex IoT Environments: Threats to Smart
Homes, Buildings and Other Structures,”28 Trend Micro proves that hijacking a smart assistant throughexposed audio devices is only one of the many attacks that can be carried out by a malicious actor
interested in breaking into a smart home.

11 | Malicious Uses and Abuses of Artificial Intelligence

AI-Supported Password Guessing
Another application involves employing ML to improve password-guessing algorithms. Despite the factthat this application is being researched with moderate success, it is important to note that this same
application has already proven to be more efficient than more traditional approaches. It is also quite hardto detect on its own. As a result, it is not far-fetched to presume that AI-supported algorithms and tools
are in constant conceptualization and development by individuals or groups who might abuse these.
Traditional password-guessing tools, such as HashCat29 and John the Ripper,30 usually work by comparing
many different variations to the password hash in order to identify the password that corresponds tothe hash. Attempts are generated from a dictionary of frequently used passwords; after, variations are
made based on the composition of the password. For example, variations of “password” might be“password12345” or “p4ssw0rd.”
Through the use of neural networks and generative
adversarial networks (GANs) in particular, it ispossible to analyze a large dataset of passwords
and generate variations that fit the statistical
distribution, such as for password leaks. This leads
to more targeted and more effective password
guesses.

A generative adversarial network is a
type of neural network that consists of twoneural network models: a generator anda discriminator, which the GAN uses todistinguish samples that are real from thosesamples that have been generated.31

An early attempt at this is already evident in a post on an underground forum from February 2020. The
post mentions a GitHub repository from the same year, in which a software is able to parse through 1.4
billion credentials and generate password variation rules based on its findings.

12 | Malicious Uses and Abuses of Artificial IntelligenceFigure 1. An underground post that mentions a password analysis tool

13 | Malicious Uses and Abuses of Artificial IntelligenceFigure 2. A GitHub repository of password analysis tools

The PassGAN system, published in 2019,32 presents a similar approach. It uses a GAN to learn thestatistical distribution of passwords from password leaks and generates high-quality password guesses.
This system was able to match 51% to 73% more passwords compared with HashCat alone.

14 | Malicious Uses and Abuses of Artificial Intelligence

The case study on deepfakes at the end of this paper contains more information about GANs.

AI-Supported CAPTCHA Breaking
The application of ML for breaking CAPTCHA security systems is frequently addressed on criminal forums.
CAPTCHA images are commonly used on websites to thwart criminals when they attempt to abuse webservices — particularly when they try to automate attacks (some attempts involve creating new accounts
or adding new comments or replies on forums, among others). Developing systems that try to break
CAPTCHA images to automate the abuse of those services would thus be a natural progression forcybercriminals.
Software that implements neural networks to solve CAPTCHAs, such as XEvil 4.0,33 is currently being
tested on criminal forums. Moreover, it has been claimed that this neural network can break humanrecognition systems using CAPTCHA on Yandex pages. The tool utilizes 80 to 100 CPU threads (with theCPUs running in parallel) to speed up CAPTCHA solving. It is also advertised on Russian undergroundforums and rented out to users for 4,000 rubles weekly (approximately US$54 as of writing) or 10,000
rubles monthly (approximately US$136 as of writing).

Figure 3. An underground post of a CAPTCHA-breaking tool (translated from Russian)

15 | Malicious Uses and Abuses of Artificial IntelligenceIn order to make it more difficult to break CAPTCHA and diminish the efficiency of AI algorithms, CAPTCHA
developers should increase the variety of color patterns and shapes. However, given the way that the antiCAPTCHA defense engines work, it is possible that doing so would cause only a very slight delay in thetime it takes for criminals to break the CAPTCHAs. Barring that, perhaps it would be worth developing
some sort of software filter to detect scripts or programs that repeatedly try to solve CAPTCHAs tooquickly. This software filter could also be developed to send completely fake, unsolvable images to thesescripts or programs in order to try and poison their datasets.

Figure 4. The underground CAPTCHA-breaking tool called XEvil

16 | Malicious Uses and Abuses of Artificial Intelligence

AI-Aided Encryption
According to Europol’s 2019 report titled, “First Report of the Observatory Function on Encryption,”34 AI
applications related to improving or breaking encryption are still in their infancy. However, it is imperative
to learn more about AI-aided encryption since there is already considerable potential in this field. An
experiment conducted by Google in 201635 is strong proof of this potential.
In this experiment, two neural networks named Alice and Bob were trained to communicate with eachother without allowing a third neural network, named Eve, to eavesdrop on their communication.
As detailed in Figure 5, neural network Alice received a plaintext P as input that it had to encrypt into a
cypher-text C, which was then received by neural network Bob and spoofed by neural network Eve. Aliceand Bob shared a common decryption key K, which Bob used to decrypt the cypher-text to plaintext
PBob, while Eve had to reconstruct the plaintext PEve without the help of the decryption key K. No specificencryption algorithm was specified; instead, the networks had to figure out how to securely communicate
on their own. Results showed that Alice and Bob were able to learn how to perform forms of encryption
and decryption autonomously. On top of this, they learned how to apply the encryption selectively only tothe parts of data that were necessary to meet the confidentiality goals set.

Eve

PEve

C

Bob

P
Alice

PBob

K
Figure 5. The communication model in Google’s research paper

This experiment by Google demonstrates another use of AI that is difficult not only to detect, but also
to defend from. From an external perspective, it is not obvious that AI is being used, and Eve (or any
eavesdropper) would therefore find it difficult — if not impossible — to piece together the original message.
AI-aided decryption, therefore, has high potential for inclusion in the arsenal of attackers, to protect theircommunication and C2 infrastructure.
In 2017, researchers from Stanford and Google demonstrated how neural networks can use steganography.
In their study, the researchers discovered that a neural network called CycleGAN learned how to cheatwhen conducting an image-to-image translation.36 In the process of translating a satellite image into amap, researchers presumed that the aerial reconstruction would not resemble the original image too
17 | Malicious Uses and Abuses of Artificial Intelligenceclosely, as they expected that some features would probably be lost in CycleGAN’s translation. However,researchers still found these features in the aerial reconstruction produced by the neural network. At
that point, they realized that CycleGAN had learned to replicate aspects of the primary image into themap’s noise patterns. In doing so, the neural network could hide some information for itself — the same
information that it would need to transform the map into a reconstructed satellite image — so that it could
produce a reconstruction that was uncannily similar to the original.
It is worth noting, as the researchers did in this case, that neural networks’ capability to embed information
is a vulnerability that could be useful for malicious actors. This possibility has also been observed by the
Criminal Use of Information Hiding or CUING Initiative under Europol.37 By implementing changes on the
primary image, malicious actors could create their own image to suit their schemes. At the same time,developers who do not exercise caution when working with neural networks could be unaware that theirpersonal information is being embedded by the same neural networks.38

Trends Found on Underground Forums
Trends on underground forums are revelatory of the possible landscape of the malicious abuse of AI in
the near future.
To observe the relevant discussion trends, we analyzed the most popular topics involving AI, ML, andneural networks on underground forums. While the number of topics is not significant yet, there are somepeculiar applications that deserve to be mentioned.

Human Impersonation on Social Networking Platforms
One application type involves intelligent systems that are able to impersonate human behavior to foolbot detection systems on social media platforms. One of the main purposes of these intelligent systems
is to monetize, through fraud, songs in services such as Spotify. The systems have an army of bot users
consume the specified songs, all the while maintaining a human-like usage pattern and thus generating
traffic for a specific artist.
On a similar note, a discussion on the forum blackhatworld[.]com talks about the opportunity of developing
an Instagram bot to create accounts of both fake followers and children, generate likes, run followbacks, and so on as seen in the following screenshot. In this case, it is presumed that AI can be used toovercome CAPTCHAs, mimic device movements like selecting or dragging, and control browsers in ahuman-like behavior.

18 | Malicious Uses and Abuses of Artificial IntelligenceFigure 6. A discussion about Instagram bots on an underground forum

On the forum nulled[.]to, an AI-supported Spotify bot (https://spotify[.]private-cdn[.]live) is advertised ashaving the capability to impersonate several Spotify users in parallel by using multiple proxies to avoid
being detected and banned by the system. It can also generate traffic and select targeted songs toincrease their play count and improve monetization. To monetize this, the AI system is used to create
playlists with different songs to better impersonate a user. The song selection follows some human-likemusical tastes, rather than choosing a random selection of songs that could alert the company that theentity behind the selection is a bot.

19 | Malicious Uses and Abuses of Artificial IntelligenceFigure 7. The pricing information for a Spotify bot

20 | Malicious Uses and Abuses of Artificial IntelligenceFigure 8. An underground advertisement for a Spotify bot

21 | Malicious Uses and Abuses of Artificial IntelligenceFigure 9. A detailed advertisement post for a Spotify bot on a forum

Online Game Cheats
AI is also used in the game cheats domain, especially for games where monetization is substantial. As
detailed in the paper by Trend Micro titled, “Cheats, Hacks, and Cyberattacks: Threats to the Esports
Industry in 2019 and Beyond,”39 the growth of the eSport industry means that it is also becoming an
increasingly interesting target for possible attacks.
Furthermore, these attacks go beyond targeting mere hobby games. They are, in fact, geared toward
professional and lucrative eSports. As online gaming competitions involve substantial sums of prize
money, they are a prime target for cheating attacks that use the latest technologies available. In fact,criminals are already using online gaming for money-laundering purposes.40, 41, 42
22 | Malicious Uses and Abuses of Artificial IntelligenceOn several different forums, posts that inquire about developing “aimbots” (software that exploits
computer vision algorithms to automatically aim at targets) are common. These bots use deep learningalgorithms to be capable not just of playing games such as League of Legends,43 but also developing
cheats for those kinds of games.
As evidenced by the following screenshots, the investigation performed on underground forums reveals
the potential of using AI algorithms to profit from eSports.

Figure 10. A post on a forum about AI cheating in eSports

23 | Malicious Uses and Abuses of Artificial Intelligence

AI-Supported Hacking
Several discussions on underground forums provide additional insights on the practical use of frameworks
such as DeepHack and DeepExploit.
In Torum, a darknet forum, one user claims to be looking for information on how to successfully use
DeepExploit and how to interface it with Metasploit.

Figure 11. A user on a forum inquiring about the use of DeepExploit

As alluded to previously, AI-enabled password-guessing tools are also already in use by hackers andother criminals. For instance, on the forum cracked[.]to, a post listing a collection of open-source hacking
tools includes an AI-based software capable of analyzing a large dataset of passwords recovered frompublic leaks. The tool is able to train a GAN that understands how people tend to modify and update
passwords (for example, modifying “hello123” to “h@llo123,” and then to “h@llo!23”), which provides
considerable help in optimizing password-guessing tools.
A discussion thread on rstforums[.]com, meanwhile, discusses the tool called “PWnagotchi 1.0.0.”
The last version of this tool, which had been originally developed to perform Wi-Fi hacking throughde-authentication attacks, it is powered by a neural network model to optimize its performance byusing a gamification strategy. Through this strategy, the system is rewarded for every successful deauthentication attempt. As a result, the incentive-based system causes the tool to autonomously improve
its performances.

24 | Malicious Uses and Abuses of Artificial IntelligenceFigure 12. A PWnagotchi 1.0.0 description post

25 | Malicious Uses and Abuses of Artificial Intelligence

AI-Supported Cryptocurrency Trading
AI-based tools are also available at a time that is ripe for developing new monetization schemes formalicious use. To illustrate, although AI-based tools for financial trading have been known for a while,the forum at blackhatworld[.]com contains a reference to AI enabled bots that are specially dedicated to
cryptocurrency trading. The bots referenced in this forum are able to learn successful trading strategies
from historic data and apply them to make better predictions on more profitable trades. Notably, although
the post dates back to April 2019 and the corresponding GitHub repository has not seen much activity
ever since, it is still indicative that cryptocurrency is a lucrative opportunity for financial gain by criminals.

Figure 13. A discussion on AI bots for cryptocurrency trading

26 | Malicious Uses and Abuses of Artificial IntelligenceSocial Engineering
As AI technology develops, so do the different schemes for social engineering that might profit from suchtechnology. This is crucial to note, as Europol has noted in 2020 that social engineering still serves as a
top threat that is utilized for facilitating other forms of cybercrime.44 In evidence of these schemes, several
interesting discussions related to AI-enabled tools to improve social engineering tasks have been foundon different underground forums.
On the forum French Freedom Zone, the reconnaissance tool named “Eagle Eyes”45 has been claimed ascapable of finding all social media accounts associated with a specific profile. Accordingly, the tool caneven match profiles with different names by comparing a user’s profile photos through facial recognition
algorithms.

27 | Malicious Uses and Abuses of Artificial IntelligenceFigure 14. The GitHub repository for the Eagle Eye tool

Additionally, a post on rstforums[.]com advertises a tool capable of performing real-time voice cloning.46
With just a five-second voice recording of a target, a malicious actor can already clone their voice. Detailed
information about voice cloning can be found in the case study at the end of this paper.

28 | Malicious Uses and Abuses of Artificial IntelligenceFigure 15. An advertisement for a voice-cloning tool

29 | Malicious Uses and Abuses of Artificial IntelligenceFuture Scenarios of Malicious Uses
and Abuses of AI
The development of new technologies, including AI systems, contributes to increased automation thatcan result in the delegation of control in some levels of society.
In addition to progressively integrating AI techniques to enhance the scope and scale of their cyberattacks,47
cybercriminals can exploit AI both as an attack vector and an attack surface. Thanks to the previously
described service-based criminal business model, the development and distribution of AI-enabled toolkits
in underground markets might provide less technologically savvy criminals with enhanced capabilities.
This second section offers a comprehensive overview based on present-day experience and explores
plausible scenarios in which criminals might abuse AI technologies to facilitate their activities. Alongside
this abuse, we expect cybercriminals to continuously employ AI techniques to conceal their illicit activities
online and avoid detection.
Other authors have proposed an interesting angle from which to analyze this topic. From this angle, if one
considers the different phases in the anatomy of a cyberattack, one could theorize how cybercriminals
might use AI techniques to improve any of them. Naturally, there is room to optimize or enhance all theclassical attack steps: reconnaissance, penetration, lateral movement, command and control (C&C), andexfiltration. [A complete study of possible AI-enabled attacks can be found in a research by the Swedish
Defence Research Agency (FOI).]48

Social Engineering at Scale
Social engineering scams are not new, but they remain successful because they prey on people’s inherent
trust in, fear of, and respect for authority. Scammers, on the other hand, try to convince their victims that
their scheme is legitimate, and that the targeted victims can safely wire money under whatever pretense
the scam calls for. Still, these scams are laborious because the perpetrator needs to spend significant
amounts of time trying to convince the victim that the story is true.

30 | Malicious Uses and Abuses of Artificial IntelligenceAn innovative scammer, however, can introduce AI systems to automate and speed up the detection rate
at which the victims fall in or out of the scam, which would allow them to focus only on those potential
victims who are easy to deceive. Whatever false pretense a scammer chooses to persuade the target toparticipate in, an ML algorithm would be able to anticipate a target’s most common replies to the chosen
pretense. The algorithm can then act according to these anticipated replies in order to continue the wholeact and lend credibility to the story. More alarmingly, this relatively easy process only requires enoughwritten material to identify the most likely replies for each incoming message.
Unfortunately, criminals already have enough experience and sample texts to build their operations on.
Even if scammers were to automatically categorize texts only within the first three email exchanges —regardless of whether the potential victim is likely to pay or not — scammers would be able to savethemselves considerable effort and time, as these three emails would suffice for the ML algorithm tocontinue the operation.
In fact, this use of AI systems would be the equivalent of automating the first-level tech support in a
corporation. Simply focusing on those three email exchanges would give the highest returns on the
scammers’ investment as they would then be able to automate the rest. Thus, by automating the one realconsiderable expense in such a criminal endeavor — in this case, people — a scammer could reduce
most of the cost and maintain their income, therefore increasing the success rate of their scamming
operation.
Another plausible scenario would involve the online verification systems that are used in the banking
sector to validate a creator of a new account. These verification systems are based on Know Your
Customer principles (also known as KYC). Anecdotally, there have been attacks where video streams weremanipulated in real time to insert fake IDs to fool the verification system. Combined with the possibility ofsynthesizing voices and faces, criminals can abuse these systems at scale, for example, to create newbanking accounts or authorize payments. This is important to note, as video-based authentication iscurrently one of the recommended identification mechanisms for the banking industry in several countries.
When trying to defend verification systems against these kinds of attack, there are two approaches: The
first is to try detecting whether the message has been fabricated (in the case of KYC, this would involve
verifying the video). The second approach is to ascertain if the source is trustworthy, in order to learn if
the message is genuine or not.
Depending on the nature of the message, detecting the attack might be difficult. For instance, in the caseof the aforementioned email scam, a simple spam filter would suffice. On the other hand, a manipulated
photo or video might be impossible to detect as fake.
Nonetheless, combining both approaches against these kinds of attack would likely be the most successful
strategy. It would be essential not only to detect whether the message has been automatically generated,but also to determine whether the origin of the message is untrustworthy. Imagine, for example, how the
31 | Malicious Uses and Abuses of Artificial Intelligencesame IP address sending KYC authentication files with different images would likely raise a red flag in thereceiving organization.

Content Generation
Content generation refers to the ability of an algorithm to generate arbitrary content that would lookhuman-made. This algorithm would also make it possible to set constraints in content generation andhave a system imitating or cloning certain aspects of an existing piece of content. There are claims that
AI-based content generators are becoming so powerful that their release to the public is considered arisk.49
Such claims refer to the Generative Pretrained Transformer 3 (GPT-3), a text synthesis technology released
by OpenAI50 in June 2020 that uses deep learning to produce human-like text and is able to adapt andfine-tune its behavior with the addition of a few domain-specific examples. Bearing a capacity of over 175
billion machine learning parameters (10 times more than its closest competitor, Microsoft Turing NLG),
this technology is capable of synthesizing not only English text, but also code in several programming
languages and even guitar tablatures, allowing for applications such as:•

Generating a full, human-sounding text of a simple title•

Turning the textual description of an application into working code•

Changing the writing style of a text while maintaining the content•

Passing the Turing test for a human-sounding chatbot

Criminals could thus employ ML to generate and distribute new content such as (semi) automaticallycreated and high-quality (spear-)phishing and spam emails in less popular languages.51 In effect, thiswould further automate and amplify the scope and scale of malware distribution worldwide.
Moreover, such content-generation techniques could significantly ameliorate disinformation campaigns
by automatically combining legitimate with false information while also learning which kinds of content
work best and which are the most widely shared.52
The ability to generate working code from a mere textual description lowers the knowledge barrier required
to become a programmer and could foster a new generation of “script kiddies” — that is, people with lowtechnical knowledge but malicious intentions who exploit ready-made tools to perform malicious actions.
Text content synthesis can also be employed to generate semantically sound content for fake websites
and more importantly, to reproduce a specific text style. In particular, style-preserving text synthesis isa technique that employs an AI system to generate a text that imitates the writing style of an individual.
Notably, the AI system does not need a large volume but rather only a few samples of an individual’s

32 | Malicious Uses and Abuses of Artificial Intelligencewriting style for its training. As a result, the technique holds some implications specifically for BEC, as itallows a malicious actor the opportunity, for instance, to imitate the writing style of a company’s CEO inorder to trick target recipients inside the company into complying with any of their fraudulent requests
Indeed, the capabilities of technologies such as GPT-3 lead us to believe that it could truly be, in terms ofimpact, the next deepfake.

Content Parsing
Content parsing is an activity generally associated with the need for identifying and extracting structured
information from unstructured documents. A broader definition might include object recognition andextraction from static images or videos, which fall de facto under facial recognition, covered in thefollowing sections of this document.
More specifically, there is an application linked to text parsing called Named Entity Recognition (NER).
In brief, NER tries to identify the semantically significant parts and pieces of individual information, suchas names, addresses, and numbers in an arbitrary text. Furthermore, it has the capability to distinguishbetween credit cards, phone numbers, and currencies, among others. A considerable amount of researchhas been produced that aim at improving the technology for identifying semantic pieces of text in amore refined way. To illustrate, this kind of identification involves the capability to distinguish, using only
context, if the word “bush” refers to vegetation or to “George Bush,” the former US president, and inparticular, which George Bush the text refers to.
In a similar stroke, malicious actors have been working at developing document-scraping malware that,once installed on a target machine, would go through all of the documents in that machine and either
exfiltrate the entire document (which is risky and very inefficient with the growing number of documents),
or look for specific bits of information. For example, the installed document-scraping malware could look
for all personal employee data on the server of a human resources department.
So far, there are still limitations in the malicious use of document-scraping malware. For instance, its ability
to parse content is still rudimentary and based on hard-coded rules and regular expressions. Secondly,
one cannot exfiltrate information such as “phone numbers” as yet. Instead, one can look for “sets of digitsthat resemble a phone number,” albeit without the certainty of finding a perfect match. Lastly, the scopeof data scraping is still broad, able to filter only by file names or extension.

33 | Malicious Uses and Abuses of Artificial IntelligenceFigure 16. A document scanning tool for compromised servers

However, with the development of more efficient NER techniques in the future, it is likely that moresophisticated scraping malware will be able to better identify relevant content and even perform targeted
searches.
For example, malicious actors might be able to evolve from scraping a company server for “everythingthat resembles a phone number” to scraping “all the emergency contact phone numbers for all the top
tier managers.”
Aside from text synthesis, there have been several advancements in image synthesis in the last few years,
to the point where an AI system is now able to synthetize a photorealistic image from a text description.53
Needless to say, the ability to generate arbitrary images that are indistinguishable to the naked eye makes
for a powerful tool for social engineers. This is another field where the use of GAN models can alreadyproduce high-quality results.54 GANs for image synthesis are discussed in further detail in the case study
that follows this paper.

Improved Social Profile Aging for Forums andBotnets
Another intriguing possibility for the malicious use of AI systems involves user behavior emulation. One
immediate application would be to use it for evading a security system based on detecting biometrics
and specific human behavior. For example, TypingDNA55 offers a commercial product with the capability
to lock one’s computer whenever it detects a typing pattern that is different from the usual user patterns.
Reports also suggest that AI detection systems are already in use by financial institutions to detect

34 | Malicious Uses and Abuses of Artificial Intelligenceabnormal spending or money transfer patterns. At the same time, there are reports that companies are
already starting to see criminals attempting to circumvent these systems by trying to stick to “normal”
usage parameters, such as working hours and fake IPs within trusted ranges when operating hacked
bank accounts or stolen credit cards.
Another notable application involves the use of these techniques to create false behavior in stolen accounts
to avoid their closure. This concept is used on Spotify accounts to automate fraudulent monetization while
avoiding detection by the system, as previously described in the subsection titled “Human Impersonation
on Social Networking Platforms."
The same could be achieved to maintain activity on stolen Twitter or Facebook accounts that the criminals
can then monetize for longer. The quality of these services — which sell likes or followers — can bemeasured by how “old” these “bot” accounts are. Naturally, any technique that helps criminals keep fakeaccounts look legitimate for longer is bound to be a precious tool for them.
In order to improve a botnet’s C&C communication, one proposal suggests56 a swarm-based method thatis grounded on AI principles. In this method, upon joining the botnet, the infected node sends a multicast
heartbeat. Older members learn the presence of this new bot and update their tables to reflect this. The
commands are sent to random nodes which, upon decryption, can be forwarded to neighboring nodes
to repeat the process. This is a novel way of managing a botnet. However, at the moment, it is just atheoretical possibility.
AI-based techniques that try to emulate real user behavior are not easy to identify. Conceivably, by using
AI techniques specifically aimed at detecting them, it would be possible to increase the likelihood ofunmasking those human-like bots. On the other hand, the described serverless C&C techniques57 appear
much more difficult to figure out. It is important to stress that from an outsider’s perspective, network
traces would not be enough to piece together what is really happening. Unfortunately, network traces areoften the only thing available to a defender. As in all cases, the more data the defender has, the higher
the likelihood of them finding out what is really happening. Like a puzzle, the more pieces one holds, theclearer the picture becomes.

Robocalling v2.0
A so-called robocalling operation can be optimized in much the similar way. Robocalling has become
a way of performing a phishing scam through a regular telephone. In this kind of scam, an automatedcaller delivers the voice phishing message and tries to entice the victim to visit a malicious website. By
adding smart automation to such a scamming system, the perpetrators can monitor whether the scam is
successful or not and what kind of arguments and logic are the most convincing to potential victims. By
tweaking those parameters, they can refine the scam to get better results over time. With enough data
points, the attackers can leverage these as features to train progressively better ML models to amplify
their attacks.
35 | Malicious Uses and Abuses of Artificial IntelligenceAnother intriguing possibility for robocaller improvement might involve the use of audio deepfakes in orderto fool the user into thinking that they are dealing with a person whom they know. For instance, a oncepopular scam involved receiving some form of communication from an acquaintance who is in distress.
Allegedly, they are stranded somewhere in the world without money and are in need of help in order toreach their hotel. This kind of fraudulent distress call can be made much more convincing, however, if itused a voice message from the acquaintance to better convey their concern and panic.
Detecting fabricated sound files is as challenging as attempting to verify any other kind of deepfake. The
added layer here is that robocalling scams are perpetrated through a regular telephone. This means thatas long as they sound convincing to the user, they could be undetectable because there is no automatedlayer that can flag this as a scam. In contrast, any other scam where the sound file has a chance to passa detection filter could be a chance for a defender to find out that the file is a fabrication, not a real soundfile.
More information and use cases about audio deepfakes can be found in the deepfakes section.

Criminal Business Intelligence
The same approach in using AI to improve and optimize the effectiveness of criminal operations canbe applied to any other scam as well, such as regular email phishing. ML, in particular, is already being
applied to improve the success rates of any corporate endeavor from sales to marketing. Presumably,
therefore, ML could be just as effective for malicious uses.
Imagine, for instance, that a regular phishing operation targeted at banks adds a small tag on emails or
embedded phishing links. Whenever the potential victim receives the email, the scammer would knowwhether the receiver has seen it (otherwise it must be assumed that it went to the spam folder), or if thelink has been clicked on. Additionally, the scammer would learn whether any personal information has
been entered on the phishing page, along with the quality of that information.
By co-relating all this data, the scammer can have a good picture of what kind of emails are more
successful for each bank. Moreover, they would learn which email databases are more likely to elicit goodsuccess rates versus those databases that have been reused repeatedly and would thus no longer yield
good results.
By automating all this, the whole scamming operation can be self-sustained, and the scammer canremove email databases that are unlikely to deliver phishing emails, craft new emails that are more likely
to succeed, and send them to those addresses that belong to more susceptible people. These engines
can also compile new email databases that list potential victims who are more likely to fall into morescams or that identify those people who open fraudulent emails and select links in them.

36 | Malicious Uses and Abuses of Artificial IntelligenceIt is also notable how modern marketing and advertising companies already use similar systems. Therefore,
it would not be a leap in imagination to presume that malware-based organizations have started to use
the same AI-based methods to improve their own efficiency.
On the same front of empowering criminal business intelligence, AI could also be used to optimize thedata flow in Traffic Distribution Systems (TDS).
TDS serve as intermediaries that buy and sell traffic between websites. The main functions of TDS include
controlling and filtering web traffic (which involve selecting a link) and collecting related statistics. They
can also filter traffic based on the cybercriminal’s preference, such as a user’s web browser and location(via IP address, for instance).
For example, a cybercriminal might set parameters in a TDS to redirect users in the US to banking trojans
but deliver ransomware to other countries and avoid deploying their malware to the Commonwealth of
Independent States (CIS). Traffic distribution systems are a staple for distributing malware via exploit kits
and drive-by downloads and can act as a service for mass-marketing malware. TDS vendors sell the
traffic from when a victim clicks on a link.
While TDS currently rely on hard-coded rules set by malicious actors, it is easy to see how an AI system
could be used to optimize the traffic distribution itself in order to maximize the revenue of the malicious
actor.
In general, it is likely that in the near future, an evolution of the CaaS concept58 would include more
and more AI-enabled services. This is because AI-related activities generally require a substantial initialinvestment in terms of human knowledge and training datasets that could be easily recovered by offering
AI services to multiple interested parties.

Abusing Image Recognition Systems
Autonomous Cars
Vehicles use a variety of sensors. These include cameras to perform ML-guided image recognition ofsigns and other elements of their environment such as pedestrians and lane separation lines. These MLmodels also determine the appropriate behavior for the vehicle to take. In an autonomous car from the4G era, this would not be a serious issue since, owing to poor data quality, the driver has to be in control
at all times on public roadways, and full autonomy by the vehicle is not possible. In a 5G-connected andfully autonomous vehicle, however, the visual sensors might have the ability to both perceive traffic lines
and execute navigation based on what they see.

37 | Malicious Uses and Abuses of Artificial IntelligenceTo add, autonomous cars are “trained” to obey the law (to not cross solid traffic lines, for example), but
this training could also be exploited to attack an autonomous car’s AI models. “Autonomous Trap 001,”
a piece of performance art by James Bridle,59 is based precisely on such a concept. The trap, illustrated
in the following figure, involves drawing two concentric circles in salt, with the inner circle drawn in solidlines and the outer circle drawn in broken ones. Since an autonomous vehicle is trained to know that it
can cross broken traffic lines, it can enter the circle with ease. However, the same vehicle would not beable to leave the circle without crossing the solid lane lines, which would mean breaking the law.
Placing traps (such as this circle) in crime-convenient spots that are covered by a jammer (or in a place
without cell coverage) would thus collect jammer-blinded, autonomous cars like flypaper — an opportunity
for chaos that criminals could take advantage of.

Figure 17. Autonomous cars can be trapped with a ring of “detour left” signs or other similar methods,
as illustrated by James Bridle's work that used traffic runes drawn in salt.60
Note: The illustration in Figure 17 recreates the photo of the trap in James Bridle’s website.

A similar adversarial method that abuses the rules of ML image sensor models can be achieved by making
other signs or marks. One example requires only a small piece of black tape on a speed limit sign. In fieldtests, tape was used to alter the digit “3” in a 35-mile-per-hour speed limit sign. As a result, the image
recognition model mistakenly recognized “35 mph” as “85 mph.” Consequently, it made this mistake 58%of the time, resulting in the car’s acceleration to illegal velocity.61
Similar attacks can also be used against AI systems without altering the traffic signs themselves, but
merely their placement.
To illustrate, attackers can make a kilometer-wide circle constructed with traffic signs such as “detour left”
that would eventually trap all autonomous vehicles that follow the detour sign. The only way to escapewould be for their human drivers to prompt an “illegal” way to leave the circle by eventually ignoring —that is, “disobeying” — the “detour left” signs. It is also important to note here that automated traffic signs
would allow this attack against autonomous vehicles to be carried out via a hacker making changes tothe sign displays.
38 | Malicious Uses and Abuses of Artificial IntelligenceMore importantly, these possible methods for manipulating AI systems that manage autonomous vehicle
traffic can be used to manipulate even non-autonomous vehicle traffic by using compliant autonomousvehicles as obstacles. Such methods, when applied to non-autonomous vehicles, could cause majordelays in the response time of police and emergency services. Combined with mass malicious ridesharing(the use of many stolen credit cards to swamp an area with rideshare vehicles), this could cause heavy
traffic at a downtown core. The resulting traffic could then be increased to amplify the effect of a terrorist
event, give more time for a bank robbery to continue, or prolong the duration of a fire by delaying thearrival of firefighters.
The sophistication of and investment in this kind of attack is minimal, and yet the ability to prevent it iscomplex. These attacks, in fact, only require a small number of autonomous vehicles to become fully
effective: Fewer than one in 100 vehicles would suffice, and even fewer during busy times of the day.
AI-facilitated attacks targeting connected vehicle ecosystems, including telematics, infotainment (such as
podcasts), and Vehicle-to-Everything (V2X) communication systems, might result in vehicle immobilization,road accidents, financial losses, and disclosure of sensitive or personal data. Even worse, it could
endanger road users’ safety.62 Notably, as vehicle automation levels63 increase and various technologies
are progressively integrated into vehicles, the potential attack surface becomes broader as well.
Finally, as the same or similar technology is used in autonomous trucks64 or autonomous cargo ships,65
the potential targets for malicious use also increase.

Drones, Connected Skies, and the Internet of Flying Things
High-quality airspace management data, including telemetry from SIM-enabled devices, is used to
manage the drone aircraft of the Internet of Flying Things (IoFT). The flight support application “flightcontrol,” in particular, is controlled by ML models that react to telemetry received from IoFT on-board
sensors66, including image recognition cameras.
These cameras and other telemetry are fed back their own version of traffic management: in this case akind of air traffic control that requires 5G-level, high-quality data. For unmanned drones to realize theirpotential, they must have the kind of real-time feedback that requires ML-optimized 5G.67
To operate Beyond Visual Line of Sight (BVLOS), these drones also need several AI-related mechanisms:
from computer vision to identify obstacles and references on the way, to a thorough ML-driven optimizationof their safe flight (through collision avoidance), safe delivery (including delivery of humans), and safe
navigation (by following “no fly” zones) behaviors. Nonetheless, these behaviors can be exploited
through the application of gaps in the basic behaviors. Often, these behavioral gaps can be triggered bybroadcasting false information via radio, paired with the display of false information such as a large letter“H” in a circle on the ground that might trick a “lost” helicopter into landing. This speculative approach
would likely capture ML-optimized drones in a fashion similar to the Iran capture of a US CIA Sentinel
drone.68
39 | Malicious Uses and Abuses of Artificial Intelligence

The capture of autonomous drones is of special interest as these tend to contain a variety of interesting
payloads such as intellectual property and live encryption keys. These can be used against previously
captured outbound radio traffic intercepted from the drone and might then be used to push bad
intelligence and false telemetry toward upstream systems. These upstream systems can, in turn, bepoisoned with false telemetry, including images prompting tactical or executive action on incorrect targets.
A few methods include SIM-jacking or SIM-swapping69 (using social engineering or other methods to takecontrol of a SIM and all its data), drone fleet management, account hijacking (controlling fleets of SIMs
and their data), and others.
In the case of Amazon delivery drones, these could be used to create larger financial incentives, as thetarget (in this case, the parcel) would be easier to monetize. As a result, this would create the equivalentof “porch pirates” or in this context, “drone pirates.”70
Additionally, a drone can be caused to drop off narcotics or antibiotics in criminal-controlled locations.
Again through SIM-jacking or SIM-swapping, a drone can be hijacked and the payload changed foranother to facilitate undetectable smuggling.
A drone with a UDOO single board computer (SBC) can also be used to collect Wi-Fi passwords. As thedrone flies, it scans for Wi-Fi signals and once it finds a router, it attempts to hack the router’s password.
When this proves impossible, the drone’s SBC resorts to saving the packet that contains the handshake,
to be cracked later on using Aircrack-ng.71
As for mitigation, new EU rules for unmanned aircraft are in development.72 One of these involves limiting
the size of individual high-damage drone strikes using consumer drones. In effect, the new limit would
then also reduce a drone’s carrying capacity for explosives, although there is some delay in implementing
these regulations due to the Covid-19 pandemic.73

Escaping an Image Recognition System
Image recognition systems such as social scoring and social credit technologies fall under “reputation
systems.” These are very similar to business intelligence and marketing systems called Social Network
Analysis and Propensities (SNAP),74 which analyze personal social network behaviors to determine thelikelihood of a particular action being taken, such as the purchase of a product. These SNAP systems
also identify who the “influencer” or leader of a group is. Similar national intelligence systems are used
to identify criminal activities such as the purchasing habits of terrorist bomb makers or members oforganized groups such as criminals. Without social network discovery tools such as SNAP, it would be
difficult to make full use of image recognition tools for discovering who the leader of a criminal group is,or even if such a “group” exists.

40 | Malicious Uses and Abuses of Artificial IntelligenceNevertheless, the use of such image recognition systems by a country’s government could pose a serious
threat to privacy and human rights. For example, during the mid-2010s, NtechLab, a Russian company
that specializes in facial recognition, released the FindFace app. With this app, a user can take a picture of
any individual and then match their face to their social media accounts. These days, FindFace is no longer
a consumer app but an instrument for Moscow’s ambitious, multimillion-dollar surveillance project. Using
live and real-time recognition, this technology can select individual faces amongst a crowd and instantly
match them with a record of criminals in a police database.75
With respect to drones, criminals have already successfully used these — without facial recognition —to deliver contraband into prisons76 and fire pepper spray at labor protesters.77 Interestingly, the useof these “para-militarized” functions in the latter example can be speculated as the evolution of blackmask counter-protest police activities such as those performed by the Black Bloc during G20 events.78
Since black mask protest organizers hide in crowds and attempt to provoke more aggressive on-camera
police response, they need a way to avoid being hit by their own pepper-spray drones as they attempt toescalate conflict. The need for this extra measure of protection from their own drones is due to the factthat in the fashion of a terrorist cell hierarchy, many members of this group do not know each other. As aresult, they are unable to share photos with one another’s faces for uploading on a drone safelist.
However, specific designs on face masks (for example, a black-and-red happy face) can be a quick andconvenient method for being safelisted. Since it is possible for a criminal group to assign a unique mask
logo to each of their members (who might all be part of a safelist), it would be difficult to detect andidentify an individual member, even with the use of image recognition for mask logos. Nonetheless, if
such a safelist of participant faces belonging to a criminal group did exist, it could serve as a source ofevidence were it to be recovered by police. For this reason, participants of organized crime would haveto safelist specific person-agnostic facial patterns, which can then be disposed of or wiped off after the
event.
It’s also worth noting here that techniques for evading facial recognition are used not only by black mask
members but also by other protesters. Tribal knowledge on these techniques have been shared online as
far back as 2010.
These disposable cosmetic “virtual faces” can protect privacy-conscious individuals. However, they canalso be used by malicious groups to avoid eventual police arrests or micro-targeted drone strikes when
any of these are based on facial recognition. Similarly, these virtual faces are also used by individuals incountries that have outlawed wearing masks in public.79 Guises for evading facial recognition will likely bearound for a while yet, as the materials for constructing them are cheap, easily hidden, easily disavowed,
and easily available. After all, it is unlikely that common consumer items for making such guises (likelipstick or face paint) would be outlawed.

41 | Malicious Uses and Abuses of Artificial IntelligenceOther disguises, such as the Juggalo clown makeup80 (used by fans of hip-hop duo The Insane Clown
Posse), are promoted as a way to circumvent facial recognition.81 Through Juggalo makeup, an individual
can have parts of their face misclassified, such as their eyes or jawline.82 In fact, a facial recognition ML
classifier system would have to be “tuned” particularly to detect these faces in addition to normal humanfaces. To do this, federated logging across multiple disharmonized systems could unite the anonymized
person with something identifiable such as cellular metadata or a vehicle license plate.

Figure 18. A collection of images analyzed against facial recognition: the top left face is correctly classified; the top
right face has eyes and right eyebrow misclassified; the bottom left face has eyes and eyebrows misclassified; thebottom right face has jawline, nose, mouth, and eyebrows misclassified.83
Image credit: Ian O’Neill/Twitter

Although the aforementioned means are considered as effective for working around facial recognition,some systems (such as Apple’s Face ID) use depth perception to identify dimples and other facial
features.84 However, this evolution in the system is less effective when used at a distance and with onlya single camera.

42 | Malicious Uses and Abuses of Artificial IntelligenceLastly, there is another matter of urgency with regard to facial recognition drones and the danger that they
could pose. Indeed, it should be noted that tiny facial recognition drones carrying a gram of explosive are
in development today, specifically for micro-targeted, single-person bombings. These drones look like
insects or small birds.85 Given the nature of this technology, devices like these are operated via cellularinternet. It is also safe to assume that they will be delivered in the hands of criminals — either throughpurchase or development — soon.
In sum, addressing the issue of evading facial recognition might be difficult for the entities that use
ML-based surveillance systems, a problem that is also being reviewed by the aforementioned CUING
Initiative. Particularly, it is paramount for these discussions to discern an ethical process for identifying
people who wish to evade facial recognition.

Remote Machine Learning Sets Pollution
Security Algorithms
In the case of security algorithms, when a fraudulent activity is detected, the anti-fraud system typically
blocks it and prompts an alert. In an anti-fraud ML model, the activities that provoke an anti-fraud response
can be mapped very clearly and effectively. In fact, the anti-fraud alerting thresholds can be built into an
attacker’s threat model (based on criminal success logs) and represented in their attack infrastructure,architecture, and spending.
Speculatively, these security algorithms would potentially use a business intelligence-based marketing
communications analytic tool, such as that of Cloudera,86 to send specific criminal “marketing campaigns”
to a chosen target victim or “customer.” When ML is used to perform accurate mapping of the antifraud systems of a specific victim group, the “marketing campaign” mentioned previously can be very
accurately tuned to always stay just below the anti-fraud enforcement thresholds. In effect, this maximizes
the profitability of the criminal enterprise investment.
In summary, by using ML to identify blind spots in detection thresholds (based on what was blocked
and what was not) the attacker can stay in that blind spot and remain undetected and persistent until
the detection rules are updated. Detection of this could be as simple as using Benford’s Law,87 whichstates that in naturally occurring collections of numbers, the most frequent leading digit is likely to be
the smallest. Therefore, if natural number statistics used in AI do not behave as statistically expected,
security rules such as alerting can then be triggered. Looking for “mathematically-consistent anomalies”
that operate just below the common alerting thresholds is, as a matter of fact, a statistical rule used in
detecting fraud. Meanwhile, more advanced actuarial techniques borrowed from the finance industry
would have the capability to detect more complex fraud such as money laundering.

43 | Malicious Uses and Abuses of Artificial Intelligence

AI-Enabled Stock Market Manipulation
AI-enabled, algorithmic stock trading systems have replaced many human traders in the past years,
particularly in the area of high-frequency trading (HFT). However, the increased reliance on such systems
has provided opportunities for AI-aided stock market manipulation as well. Indeed, there are alreadycases where private investors have managed to crack the algorithms of a large electronic marketplaceand manipulate share prices in their favor.88 Experiments with adversarial bots also demonstrate that byusing automation, the stock market can be manipulated.89
HFT algorithms exaggerate and accelerate market activity. Similarly, stock market “flash crashes” and theconsumption of asset value through a series of small returns on larger trading fees can create a sudden
unpredicted change in the market with consequent change in investor confidence. This can lead to further
systemic risk to the investors if exploited by criminals.
Variations on these security “criminal ML detection” approaches could be used to detect SIM-jacking(through the detection of statistically anomalous behavior), mass wiretap (by giving alerts on unexpected
telecommunication metadata such as erratic latency), and other optimized telecommunication abuses.
Traditional fraud types like credit card fraud can also be found in nontraditional methods such as SIM card
auto-pay and other money-laundering methods.

Business Process Compromise and Injection of
Safelisted Telemetry
Phones, laptops, internet of things (IoT) devices, and most other types of internet-connected technology
are powerful surveillance devices and can be thought of as sensors. The remote sensor information(called sensor telemetry) is used by corporations that manage the devices. For example, the device canbe managed to follow an instruction such as, “When Sensor Telemetry X says that Event Y occurred,
execute Event Z.” Nevertheless, while most organizations have network and software security, very few
have data security. This gap means that attacks relying on the manipulation of data (such as fraud) are
relatively undetectable when they also leverage unsecure endpoints such as sensors.
Notably, this telemetry is very important. Very large and complex sensor networks such as carrier telephone
networks or national corporate IT networks can make profitable decisions based on detailed insights ofthe sort generated by AI-based telemetry analysis. When a number of sensors are compromised (throughthe use of a botnet, SIM-jacking, or other means) an ML model will receive false sensor telemetry, andsince it bases its decisions on this telemetry, it unwittingly opens the door to large-scale persistent fraud.
Unfortunately, an ML model only has to be tricked a small number of times with false telemetry before it
is retrained and updated, thus incorporating this false telemetry into its models. At this point, the attacker
can step back and let the AI algorithm, as it were, do their job for them.

44 | Malicious Uses and Abuses of Artificial IntelligenceAI is normally performed offline. When AI is executed in a real-time production network such as in 5G, theassets previously controlled by the AI models will then be controlled by the attacker. Furthermore, since
this data is not filtered or secured at the data level, it can be modified to provoke a disaster by producing
responses unexpected by the systems developers, including ones that are subject to abuse.
Example of a Business Process Compromise: Vehicle Navigation Design Gap
In February 2020, the artist Simon Weckert conducted a piece of installation and performance art byfilling a small red cart with legitimate, active, fully enabled phones.90 He then pulled his cart full of 99
active phones down several German streets. Google Maps considered this as 99 cars moving slowly,
since in Google Maps, the slow movement of so many phones was interpreted as a high-traffic condition.
Although the description of Weckert’s installation and performance piece references Moritz Ahlert’s “ThePower of Virtual Maps,” a paper which analyzes power relations in cartography and virtual modificationsin the way people interact with maps since Google Maps came to be,91 the result of his piece has some
implication on the design gap in vehicle navigation. Indeed, as a result of Weckert’s legitimate activity(perceived as traffic by Google), Google Maps then redirected other real-world cars to other much lesseffective and more distant paths.
While Mr. Weckert’s activity was a legitimate and very original example of performance and installation art,
it is therefore easy to see how this might be abused. Using 99 burner phones to send 99 ridesharing cars(or even more) to a certain location at a certain time would achieve the same result, with the added impactof physical cars being actually present and thus forming a real obstacle. One can assume, for example,
that enough traffic density would pose a problem to fire, ambulance, and police response.

Figure 19. The artist Simon Weckert conducting his performance and installation art with a cart full of 99 active
phones in the streets of Germany.92
Image credit: Simon Weckert/Simon Weckert

45 | Malicious Uses and Abuses of Artificial IntelligenceInsider Attacks: Banking and Trading Floor AI
Some bank tasks are heavily automated for the purpose of improving and accelerating their performance.
The value proposition of one bank over another might be determined by infinitesimal improvements in the
speed of trading (which involves taking advantage of many tiny opportunities),93 or the tiniest improvementin the accuracy of stock trading (which involves many tiny reductions in loss). The largest banks all havethe top trading floor deployments, which results in nearly identical systems between banks and nearly
identical financial AI deployments. These AI deployments in financial technology (FinTech) have, in turn,nearly identical mathematical quantitative or “Quant”94 models, which results in ferocious competition
over the most talented staff and the tiniest competitive edge that they can represent.
With regard to this context, AI is important for banks as it can improve their profitability. Meanwhile,human Quants who use the output of AI models are also important since they are the drivers of the global
stock market.
There is, however, a deeper level where AI data scientists are responsible for making, tuning, andimplementing the models themselves. For competitive reasons, the identities of these individuals are kept
secret according to a contract that also contains punitive clauses prohibiting them from working for acompeting bank for a long period after they leave their current bank.
Still, it should be noted that these trading algorithm data scientists are in a powerful position because
they control the ability of the bank to make both trades and profit. Often, their ML models and code areso obscure that the execution of these models is difficult to reverse-engineer, even for their creator. Thesescientists are required (as their core job function) to manipulate their bank’s presence in stock markets.
They are the uncontested secret masters of the single machine that is most responsible for a bank’s ability
to make money. In effect, nobody knows how they do what they do, except for them.
It is speculated that this opportunity would be too tempting to ignore. For some, the ability to develop AI
models that are “self-fulfilling financial prophecies” allows nearly undetectable insider trading since thisis a non-alerted behavior. Banking scientists of this sort can dictate the massive buying power of a bank,buy what they know the bank will buy, and then sell after the bank has bought it. Since they sell after thebank has bought, the scientist’s stock goes up in value and they can then cash out the difference. This
insider trading can be undetectable if performed in the so-called gaps of audit controls under the AntiMoney Laundering/Combating the Financing of Terrorism (AML/CFT) or insider trading controls (which
only look for specific indicators).95 Indeed, none of these controls can detect ML-driven insider trading
if certain steps are taken. If the AI rules treat AML/CFT-auditable behavior as off-limits, this would meanthat the only insider trades that are performed would be the ones for which there are no AML/CFT or otheraudit functions. Additionally, it should be noted that this practice is already being followed by criminals
today, albeit manually through reverse-audit of global standards.

46 | Malicious Uses and Abuses of Artificial IntelligenceThis practice can also be reverse-engineered to short-trade a stock. Speculatively, an algorithmic AI
money-laundering type sequences these trades and splits their results for them to remain below financial
detection thresholds.

Local Library Poisoning by Resident Malware
Present-day malware can alter the general behavior of a computer system by injecting external code into
resident software libraries, for example, to persist reboots or trigger behaviors under specific conditions.
This kind of deterministic mechanism is nowadays relatively easy to detect, as it involves either a code
injection with a specific and detectable signature, or even in cases of heavily encrypted code, a behavioral
signature that can be detected by an external agent.
However, ML, and deep learning systems in particular, do not follow the philosophy of a classical computer
program. As we mentioned in the previous subsection titled “AI Malware,” decisions are not encoded indeterministic and explicit lines of code but are rather encoded in the form of trained models that are
represented by matrices of numbers.
This approach raises the known problem of the explicability of machine learning models: Whenever an
ML system makes a decision, for many other ML algorithms this decision is taken by a black box of pretrained matrices without a clear, explicable reason for taking a particular decision. For example, a spam
filter that relies on deep learning to identify spam content would be very hard to debug in case of a false
positive, as it would lack any specific information explaining why it classified a given message as spam.
Criminals, for their part, might see this particular issue as a source of future opportunities. Whereas alibrary alteration might be spotted by either code or behavioral signatures — by looking for anomalies ineither the code or its execution, for instance — anomalies in an ML model would be harder to identify due
to the model’s lack of explicability.
Therefore, future malware might impact host machines by targeting, exfiltrating, or altering an ML model
directly, rather than libraries or software APIs. After all, a difference in an ML model that is due to malware
would be hardly distinguishable from a difference that is due to a model update.
It will thus become paramount to ensure that integrity check mechanisms for ML models used in
production are put in place, in the form of either checksum algorithms or integrity-training sequenceswith known outcomes for the model.

47 | Malicious Uses and Abuses of Artificial Intelligence

AI-Supported Ransomware
The 2017 WannaCry and NotPetya cyberattacks spread worldwide with an unprecedented speed due toself-replicating functionalities.96, 97 In light of the proliferation of ransomware attacks and the continuous
efforts of cybercriminals to optimize their effectiveness, AI-supported ransomware attacks might emerge
with self-propagation features. In the future, deep neural networks can be abused to enhance the target
selection based on predefined attributes or used to disable security measures of the target system98
that will facilitate lateral movement. Additionally, AI could exacerbate ransomware attacks by intelligent
targeting and intelligent evasion.99, 100 Intelligent targeting would allow for finding new vulnerabilities byusing a combination of attack techniques and leveraging the most effective ones in terms of infiltration.101
The impact of such an AI-supported ransomware attack on international private companies could be
devastating, as their global affiliates could be rapidly infected. Recent experience102, 103, 104, 105 indicatesthat cybercriminals progressively use ransomware to target entire municipalities or city-wide services,which could make potential AI-supported ransomware attacks even more damaging. The same possibility
applies to critical infrastructure and essential services that are also highly vulnerable to such attacks andcould result in serious real-life consequences with a large geographical reach.

Escaping AI Detection Systems
AI provides extensive possibilities for attackers to enhance their operational security and avoid detection.
Ransomware families such as Cerber have already employed a multilayered antimalware detection
approach, including a separate loader designed to evade ML solutions.106 Attackers can also use AI
for protection of their criminal infrastructure by detecting intruders or suspicious environments (suchas sandbox), or they can create a self-destructive mechanism in the malware that is triggered when asuspicious behavior is detected.107 Such forms of evidence erasure will then significantly obstruct theprocesses of evidence gathering, investigation, and technical attribution.

Fraud and Voice Recognition in Banks
Banks use voice authentication for a variety of purposes, especially in securing their “softest security
perimeter,” the human element of call centers. Call centers, by their nature, employ staff that are subject
to some of the most sophisticated fraud practitioners in the world who, in turn, often have very advanced
voice-acting skills.
The objective of these attackers is account hijacking. They seek to gain access to account credentials or
ask for a password reset. Otherwise, they aim to gain access to the target customer’s account authority.
This account authority is used to drain the victim’s account of resources or even to gain credibility foreven larger attacks. This secondary target might also include authorizing large payments from the victim’s
company.108
48 | Malicious Uses and Abuses of Artificial Intelligence

The adoption of voice biometrics has reduced the incidence of fraud against customers by as much as
90% in account takeover cases.109 The accuracy of these models is driven by the overlap of two typesof AI systems: voice analytics and fraud analytics. When both function properly, these AI systems are
combined to reduce call center attacks on banks, as well as online attacks from a variety of sources.
These include performing brute-force attacks on customer accounts (since they now need voice matching),
compromising the PIN database (in which the PIN is a voice), credential sharing (people cannot share their
voice), phishing or vishing (a person cannot easily give up their voice), and PIN reset function (the reset
PIN is still the person’s voice and would still be difficult to copy).
ML-powered voice authentication ironically finds as its weakness the inherent trust that technologists
place in new technologies. When the security represented by voice biometrics is compromised by voicecloning tools such as LyreBird110 or others that are less legitimate, the assets protected by voice biometrics
are placed at risk. Currently, this situation with ML-powered voice authentication is an arms race in which
the accuracy of detection models used in voice security platforms (such as Nuance111) is in competition
with the accuracy of models generated by non-security, voice-cloning ML.

49 | Malicious Uses and Abuses of Artificial IntelligenceRecommendations
This section of the report proposes a non-exhaustive list of recommendations on how to enhance
preparedness to address the current and potential future evolution of malicious uses and abuses of AI.
•

AI for Good:ºHarness the potential of AI technology as a crime-fighting tool to future-proof the cybersecurity
industry and policing, building on ongoing efforts to ensure that AI is trustworthy: meaning that itis lawful, ethically adherent, and technically robust.

ºPromote responsible AI innovation and the exchange of best practices in public forums such as
the AI for Good Global Summit,112 the Europol-European Network and Information Security Agency(ENISA) IoT and AI Security Conference,113 the Europol-INTERPOL Cybercrime Conference,114 andthe UNICRI-INTERPOL Global Meeting on AI for Law Enforcement.115•

Further research:ºEnhance cyber resilience to present and future malicious uses or abuses of AI by developing
specific, in-depth, forward-looking threat assessments and continuously mapping the AI threat
landscape.

ºAdopt risk management approaches to classify the threats stemming from the current and futureuses and abuses of AI and prioritize the response measures accordingly.

•

Secure AI design frameworks:ºPromote the development of robust AI systems following security-by-design and privacy-bydesign principles.

ºDevelop specific data protection frameworks to enable continuous development, experimentation,and training of AI systems in a secured and controlled environment (sandbox concept) to ensure
maximum accuracy of AI systems.

ºEncourage the adoption of a human-centric approach to AI, such as the European Union (EU)framework for Trustworthy AI.116º

Set forth technical standards to promote the cybersecurity of AI, such as the efforts of the European
Telecommunications Standards Institute (ETSI) Industry Specification Group on Securing Artificial
Intelligence (SAI).117

50 | Malicious Uses and Abuses of Artificial Intelligence•Policy:ºDe-escalate politically loaded rhetoric on the use of AI for cybersecurity purposes that canobstruct the ability of the cybersecurity industry and law enforcement authorities to respond toand stay ahead of cybercriminal developments.

ºPromote the development of internationally applicable and technology-agnostic policy response
measures to prevent the potential malicious use of AI without impeding the innovative and positive
applications of AI.

ºAcknowledge that the implementation of AI for cybersecurity and crime-fighting purposes canleave an impact on individual rights; address these concerns by systematically fostering informed
public debates in order to generate public consent and develop appropriate measures.

ºEnsure that the use of AI for cybersecurity purposes, including by law enforcement authorities,
follows ethical guidelines and is subject to effective oversight to provide for long-term sustainability.

•

Outreach:ºLeverage public-private partnerships and foster the establishment of multidisciplinary groups of
AI cybersecurity experts, such as the ENISA Ad-Hoc Working Group on AI Cybersecurity.118ºEnhance AI literacy and cyber hygiene by developing innovative prevention and awareness-raising
campaigns on AI cyberthreats, such as Trend Micro’s Project 2020 web series.119ºPromote capacity building, cross-sectorial collaboration, and knowledge sharing on tools, tactics,
and techniques to deter, detect, mitigate, and investigate misuses of AI.

51 | Malicious Uses and Abuses of Artificial IntelligenceCase Study: A Deep Dive Into
Deepfakes
Deepfakes
One of the most visible malicious uses of AI (and perhaps the most immediately tangible, damaging
application) is the phenomenon of so-called deepfakes. A portmanteau of “deep learning” and “fakemedia,” deepfakes involve the use of AI techniques to manipulate or generate visual and audio content
that is difficult for humans or even technological solutions to immediately distinguish from authentic ones.
The technology has been lauded as a powerful weapon in today’s disinformation wars, whereby one canno longer rely on what one sees or hears. Moreover, coupled with the reach and speed of the internet,
social media, and messaging applications, deepfakes can quickly reach millions of people in an extremely
short period. With regard to such a short timeframe, deepfakes present considerable potential for a rangeof malicious and criminal purposes which includes:•

Destroying the image and credibility of an individual,•

Harassing or humiliating individuals online,•

Perpetrating extortion and fraud,•

Facilitating document fraud,•Falsifying online identities and fooling KYC mechanisms,•

Falsifying or manipulating electronic evidence for criminal justice investigations,•

Disrupting financial markets,•

Distributing disinformation and manipulating public opinion,•

Inciting acts of violence toward minority groups,•

Supporting the narratives of extremist or even terrorist groups, and•Stoking social unrest and political polarization

52 | Malicious Uses and Abuses of Artificial IntelligenceOther, more far-fetched examples include the possibility of triggering an international diplomatic incident,
for instance through the release of a deepfake involving a leader of a country with advanced nuclear
technology announcing or calling for a nuclear strike against another country or territory. Although unlikely
to result in a kinetic retaliatory response, it could momentarily create mass panic and confusion.
One side effect of the use of deepfakes for disinformation is the diminished trust of citizens in authority
and information media.120 Flooded with increasingly AI-generated spam and fake news that build on
bigoted text, fake videos, and a plethora of conspiracy theories, people might feel that a considerable
amount of information, including videos, simply cannot be trusted, thereby resulting in a phenomenon
termed as “information apocalypse” or “reality apathy.”121 In fact, one of the most damaging aspects ofdeepfakes might not be disinformation per se, but rather the principle that any information could be fake.122
This leaves the door open for another damaging aspect of the spread of deepfakes and fake news in
general. Ultimately, difficulty in authenticating videos allows any compromising information to be denied
because any audio-visual content could be fabricated. In other words, anyone can claim a video to be
fake, thus completely shirking any accountability for their actions. This is how deepfakes could be used
not only to threaten our already vulnerable information ecosystem but also to undermine the possibilityof a reliable shared “reality.”
Deepfakes began their rise to prominence around the end of 2017 when an anonymous Reddit user
posted videos of popular figures such as Taylor Swift, Scarlett Johansson, Aubrey Plaza, Gal Gadot,
and Maisie Williams with their faces superimposed on the bodies of women in pornographic movies.123
Although these videos were quickly taken down by the hosting platform, the potential of this unexpectedfacial replacement technique rapidly gained both media and public attention, leading to its propagation
across the internet.
While this case study focuses on the malicious use of deepfakes, it is important to note that there arealso many positive applications of this technology. For example, video synthesis can allow the automobile
industry to simulate autonomous car accidents in order to learn and avoid errors in the future, while thefilm industry can use this technology for digital resurrection of deceased actors. Voice synthesis canequally be used to “enable” individuals to speak several languages with their own voice, while medical
researchers can use it to develop artificial voice replacements for people who have lost the ability to
speak.124

The Technology Behind Deepfakes
Deepfakes are created by manipulating content to produce a synthetic audio-visual file and make it
appear genuine. The technology used to generate deepfake audio-visual content is contingent upon the
different types of digital forgeries. In general, deepfake images and videos can be categorized as follows:•

Face replacement: swapping the face of one person by stitching it onto that of another person

53 | Malicious Uses and Abuses of Artificial Intelligence•Face re-enactment: manipulating the features of a target’s face to make it look like they are saying
something that they are not•

Face generation: creating convincing, yet entirely fictional synthetic images of individuals•

Speech synthesis: generating audio content by using and training algorithms to create a deepfake
voice or a synthetic audio file•

Shallowfakes: creating audio-visual forgeries of a less sophisticated nature using rudimentary editing
techniques

Independent of the format (sound, image, or video), synthetic media can be generated using GANs, aninnovative unsupervised machine learning application invented in 2014 that has revolutionized the deeplearning field. It consists of two artificial neural networks: The generative network generates new datawith the same characteristics as the training set, while the discriminative network separates generated
data from training data.125 For example, a GAN trained on photographs can generate new ones thatlook similar to a dataset of stored photos. The discriminator receives randomly-produced photographs
by the generator from the real dataset and tries to identify them. The generator’s objective is to fool thediscriminator network by producing increasingly better novel candidates, while the aim of the discriminatoris to become even better at detecting synthesized images. This loop process drives both the discriminatorand the generator to improve the creation of real-looking media. A GAN can also be trained on thousandsof photos of faces to produce a new portrait that approximates those photos without being an exact copyof any one of them.126 Although deepfakes usually require a large number of images to create a realistic
forgery, in the near future GANs will be trained on less information and be able to swap heads, wholebodies, and voices.127
Another technique uses a more primitive type of artificial neural network called autoencoder. This neuralnetwork consists of an encoder that compresses an image by reducing it to a lower dimensional latent
space, and a decoder that reconstructs the image from the latent representation. Deepfakes use thisarchitecture by having two encoder-decoder pairs, where each pair is used to train on an image set.
During the training process, one encoder finds and learns similarities between the two faces and reducesthem to their shared common features, such as eyes, nose, and mouth positions. Two networks use thesame encoder but different decoders for each image. To illustrate, one decoder recovers Face A andanother decoder recovers Face B. To swap faces, the image of Face A is encoded with the common
encoder and decoded with the decoder of Face B. The decoder then reconstructs the face of Person B
with the expressions and orientation of Face A. To produce a convincing video, this has to be done on
every frame.128

54 | Malicious Uses and Abuses of Artificial IntelligenceOriginal
Face A

Encoder

Latent Face A

Decoder A

Reconstructed
Face A

Original
Face B

Encoder

Latent Face B

Decoder B

Reconstructed
Face B

Original
Face A

Encoder

Latent Face A

Decoder B

Reconstructed
Face B from A

Figure 20. A deepfake creation model using two encoder-decoder pairs. Two networks use the same encoder but
different decoders for the training process (top). An image of Face A is encoded with the common encoder anddecoded with Decoder B to create a deepfake (bottom).129

Alongside AI-powered deepfakes, less sophisticated forms of audio and video manipulation have alsocome to the fore and therefore create the possibility for criminal or malicious use. As aforementioned,
these shallowfakes, also known as cheap fakes, are videos or audio recordings that are either presented
out of context or are doctored with simple editing tools, such as deliberately slowing down or speedingup the pacing to portray the subject in a misleading manner. Other possible manipulations consist of
selectively splicing together some unaltered clips of a speech, removing or softening the tone of the text,
or adding context by changing the start and end times of a video. Such editing does not actually alter theoriginal content but merely reframes how the viewer sees it, thereby ascribing new meaning to a previously
innocuous video. Although they differ from deepfakes in that their creation does not involve the use of AI,
shallowfakes nevertheless merit acknowledgment as part of the broader deepfake phenomenon.
As indicated previously, audio recordings can also be deepfaked to create audio content, such as “voiceskins” or “voice clones” of public figures. For deepfake audio, machine learning engines are trained on
conference calls, YouTube, social media updates, and even TED talks to copy the voice patterns of sometarget individuals and then generate new audio clips with the same voice characteristics. Because thismethod can use the real voice of the targets and it is possible to splice their words up, algorithmicallygenerated voices alone can sound incredibly real.130

55 | Malicious Uses and Abuses of Artificial IntelligenceDeepfake Creation: Apps and Tools
Deep learning models can be employed by malicious actors who, in turn, can easily use open-source
tools that are available on GitHub, distributed on forums, or sold in underground markets. Additionally,
they can use functions available for commercial or personal use from major software companies suchas NVIDIA and Google. This means that while technical knowledge and understanding of computationalparameters are required in order to develop such a technique, much of the software is already available
to the public for general use.
A challenge with deepfakes creation, however, is that deepfakes are hungry for data, which is to saythat they require large amounts of audio-visual data to train their models. However, service portals that
require a training dataset as small as 250 photos have already emerged, thus changing the dynamic andfacilitating deepfake creation.131 For example, Samsung’s AI Center created a model that needs only a few
images to transform it into a realistic “talking head” video.132
Mobile phone apps have also transformed the process of deepfake creation, enabling users to create
deepfakes with simple apps. Examples of this are FakeApp,133 the first app that greatly contributed to
deepfake hype in January 2018, FaceApp,134 a Russian face-aging app that went viral in 2019 but quickly
encountered privacy policy issues that hampered its success, and finally Zao,135 a Chinese app thatenables users to swap their faces with film or TV characters on which the system has been trained. There
are also several websites that offer deepfake creation upon request as a service.136
The growing commodification of tools, services, and apps are helping to serve as a workaround for thetechnical complexity of this technology. More importantly, it will lower the barrier for individuals or groups
who are not experts to create deepfakes, increasing the possibilities for their malicious use in the near
future.

The Current State of the Abuse of Deepfakes
As noted, early examples of deepfakes involved actors having their faces woven into pornographic
videos. However, since then the use of deepfakes has expanded to include political leaders, comedians,
entertainers, and so on.137
Apart from their use for the purposes of non-consensual pornography, there have been surprisingly few
reported examples of the malicious use of deepfakes. In fact, some of the most prolific deepfake videos
that have gone viral were not created for malicious intent, but rather for the purpose of raising awarenesswith the goal of highlighting the potential threat of this technology. This was the case with the deepfake
video of former US President Barack Obama that used the voice of actor and director Jordan Peele,* An example is available at https://deepfakesweb.com.

56 | Malicious Uses and Abuses of Artificial Intelligencewho collaborated with Buzzfeed in April 2018 to create the video.138 Another example features Mark
Zuckerberg, CEO of Facebook, where he appears to talk about Facebook’s fake video policies.139
While there are not many reports of deepfakes being used for malicious or specifically criminal purposes,
some examples of deepfake (or alleged deepfake) use have been identified. These examples have, inparticular, been observed in the political scene. In 2019, a deepfake video that went viral in Malaysia
involved a political aide who appeared to confess to having had homosexual relations with a cabinet
minister. Additionally, the video included a call to have the minister investigated for alleged corruption.140
While the motive behind the video (beyond character defamation) remains unclear, it succeeded to wreak
havoc politically and destabilize the coalition government.
In late 2018, a video with Ali Bongo Ondiba, the President of Gabon, who had not been seen in public forseveral months and who had been believed to be in poor health or even possibly dead, was released. In
effect, it sparked a national crisis.141 The belief that the video was a deepfake seemed to confirm theories
that the government was keeping the President’s true condition under wraps. In reaction to this, theGabonese military staged an unsuccessful coup d’état. Although it appears that the video was likely not
fabricated, the potential political ramifications are clearly evident in this case.
Beyond the political realm, deepfakes have demonstrated the potential to cause damage in other areas.
Recently, well-known Malaysian actor Zul Ariffin claimed that a viral sex video on social media with aman resembling him was a deepfake.142 Aside from resulting defamation, the release of the video was
alarming since the distribution or display of pornography in Malaysia is a criminal offense. That the video
in question is a deepfake has, however, not been verified and thus it remains only an alleged case. This
exemplifies one of the most damaging aspects of the spread of deepfakes — and fake news in general forthat matter — which is that anyone can claim compromising audio-visual content to be fake.143
Shallowfakes have also been seen to present a political threat. For instance, a video of United States
House of Representatives Speaker Nancy Pelosi was slowed down, giving the false impression that
she was drunk or impaired. In this case, the shallowfake generated as much media frenzy and politicalcontroversy as its deepfake cousins.144
As already observed, deepfake technology can create convincing but entirely fictional photos fromscratch. In 2019, a phantom LinkedIn profile under the name “Katie Jones” appeared online. Katie, ayoung professional in her thirties, worked at the Center for Strategic and International Studies and wasconnected with a number of US governmental officials. Experts who examined Katie’s profile flagged it
as fictitious and established that her profile photo was AI-generated, created most probably in an attempt
to lure people of interest and collect information, possibly as part of an intelligence-gathering operation.145
One of the more prominent ways in which deepfakes can be used for major criminal financial gain involves
deepfake audio rather than video or image. In March 2019, the chief of a UK-based energy firm transferrednearly 200,000 British pounds (approximately US$260,000 as of writing) to a Hungarian bank account after
57 | Malicious Uses and Abuses of Artificial Intelligencebeing phoned by an individual who used deepfake audio technology to impersonate the voice of the firm’s
CEO.146 Meanwhile, Symantec reported that it saw three successful fake audio attacks (including the UKcase) on private companies that used a call from the “CEO” to a senior financial officer requesting anurgent money transfer.147 In another example from July 2020, NISOS discovered a similar attack targetinga tech company employee, with the aim of persuading them to send the attackers money.148 Criminals
also created a shallowfake audio of Europol’s former executive director for major financial gain by using
audio from a previous public interview and attempted to extort 10,000 euros (approximately US$11,790
as of writing) from a victim. The scheme was revealed for what it was, however, when the victim phoned
Europol to inquire about the return of their money. Consequently, they were also advised not to send any
more money to the fraudster.149
A deepfake audio was also recently submitted to a court in the UK in a custody battle over children.
The fake audio clip, which allegedly demonstrated the father threatening another party, was used in an
attempt to undermine the father’s case to secure custody.150 The fabrication of evidence is, of course,a criminal act. The unique developments in this case raise particularly serious concerns regarding thecredibility and admissibility of audio-visual footage as electronic evidence before the courts and serves
as an important warning for criminal investigators, courts, and legal professionals regarding audio-visualevidence in the era of deepfakes.
Another malicious abuse of deepfakes that received limited media attention but has serious security
implications is the so-called morphed passport photos, also known as “morphing attack” orface-morphing trend. Face morphing allows a single passport to be used by two or more individuals
through a process that merges their photos into one that retains a likeness to both or all individuals. The
morphing process is made possible through the use of GANs that can trick both human ID examiners andthe AI behind biometric facial recognition systems.151 The morphed face photos are currently used in twoways, namely on Fraudulently Obtained Genuine (FOG) documents or falsified IDs.
In the first attack vector, criminals target the print application issuance process of an ID, which requires
an applicant to submit a printed photo along with their application form (as opposed to the live enrolment
process, in which a photo is taken of the applicant during the application process itself). However, it ispossible to submit a fraudulent renewal application for an ID using a morphed photo of individuals wholook similar. Since the size of the required photo is small, it is difficult to detect if it is a morphed photo. As
a result, this falsification contributes to the issuance of FOG documents. Furthermore, since the processof generating FOG documents is in turn facilitated by false breeder documents (that is, documents thatserve as a basis for obtaining other IDs such as birth certificates),152 the identification of a fraudulent
document at later stages of the application process has become increasingly challenging.
The second attack vector involves using a morphed photo during the falsification process of an ID. In
this case, a forger can print the morphed photo over the genuine photo of the original ID. This type offalsification can also be done by using stolen IDs.

58 | Malicious Uses and Abuses of Artificial IntelligenceUnfortunately, current research indicates that both human examiners without special training andtraditional solutions for identifying morphing attacks have low face-morphing detection rates. Both arealso prone to error.153, 154, 155, 156 It is worth emphasizing that this trend of using morph-based identity
for fraud significantly undermines passport-issuing authorities, border security controls, and identity
verification procedures.157, 158

Potential Reasons for the Low Rate of
Adoption of Deepfakes
Although examples of the malicious abuse of deepfakes such as the aforementioned have been witnessed,
deepfake creation technology is not being employed on a large scale by criminals yet, compared with whatmight have been expected since its emergence in 2017. The main use of deepfakes still overwhelmingly
appears to be for non-consensual pornographic purposes. Notably, in September 2019, the AI firm
Deeptrace found 15,000 deepfake videos online, of which 96% were pornographic and 99% of whichused mapped faces of female celebrities onto pornographic actors.159 That there is not more evidence of
the abuse of deepfakes by criminals or for criminal purposes raises the important question of why. Why,in spite of the potential for the malicious use of deepfakes, have there not been more instances of these?
Here are some potential reasons:160
1.

Short life-span. With high degrees of globalization and interconnectivity, fake content is generally
flagged within a short period. In this regard, fake content is likely only to generate an immediate shock
factor that would shortly wane afterward.

2. Technical skills. Although the technology is available in tools and packages that facilitate its
implementation, it nevertheless requires a high degree of skill to produce very convincing videos. It isalso plausible that criminals would struggle to find the necessary data scientist required to create abelievable deepfake. Cheap fakes or shallowfakes, which do not require such skills, on the other hand,are generally more readily identifiable and thus would be a less effective tool for criminals.
3. More effective “traditional” attacks. Current criminal tools, technologies, and approaches are likely
to be more effective and easier to employ. They would also be less costly and less time-consuming.
Hence, if the objective is to generate profit from the use of deepfakes, there are easier ways to makemoney legally rather than illegally.
Although understanding these factors could shed light on why there have been relatively few instances
involving the malicious abuse of deepfakes, it would be prudent to note that these factors might notalways be applicable. As technology becomes more available to the general public and more convincing
synthetic media becomes possible to generate, eventually criminals will no longer require such high levelsof technical skill, and deepfakes might become a more effective means of attack.

59 | Malicious Uses and Abuses of Artificial IntelligenceSome Possible Future Threats of Deepfakes
The rise in the manipulation of images and voices for criminal purposes has been identified as a potential
threat by many, including Europol161, 162, 163 and UNICRI.164 While the large-scale abuse of deepfakes bymalicious actors and criminals in particular has not been witnessed to date, it is significant to note thepotential of this technology when it is combined with the growing accessibility to and increasing qualityof deepfake creation tools. As a result of these two conditions, there is merit in hypothesizing possible
scenarios that speculate how criminals might soon use the technology.
The following have been identified as conceivable possibilities in the near future:
Scenario 1: Disinformation campaigns. Deepfakes could be used as part of mass audio-visual
disinformation campaigns to create believable fake content that impersonates high-profile public officials
in order to interfere with elections or incite violence or public unrest. For instance, deepfake videos of apolitician taking a bribe or confessing complicity in a crime, or soldiers committing war crimes or a terroristgroup brutally assaulting individuals from a minority, could likely cause domestic unrest, protests, anddisruptions in elections. They could even lead to international conflicts if governments were to mobilize
the military based on such fabricated videos.165 Although deepfakes for disinformation purposes have ashort-lived effective window, attackers can still leverage them if the window itself is kept in mind and built
upon as part of the modi operandi. For instance, the short window of deepfakes can make them crucial
instruments in situations where an immediate emotional response can be generated or in circumstanceswhere time is of the essence, such as on the last day before an election.
Scenario 2: Securities fraud. Deepfakes could be instrumentalized as part of stock market manipulation
or fraud schemes. For example, a deepfake showing a chief executive saying racist or misogynistic slurs,announcing a fake merger, or making false statements of financial losses or bankruptcy, could interferewith stock market values, and so could deepfakes that portray a chief executive seemingly committing acrime.166, 167 Although the stock value can recover significantly once the video is claimed as fake, it could
nevertheless trade at a much lower value than before, which would create a loss in the company thatgrows as concerns about the authenticity of the video linger globally. A deepfake of a senior company
official could also be used to facilitate the theft of trade secrets or sensitive company data by deceiving
company employees to send privileged information to criminals. In turn, this kind of stolen information
can deeply affect the company’s finance and stock value.
Scenario 3: Extortion. By threatening to release a fake video that would damage the reputation or
credibility of an individual or legal entity, criminals could also use deepfakes to extort a ransom or privileged
information. It is also possible that the use of deepfakes for extortion purposes could be combinedwith a ransomware attack.168 Cyber-related extortion attacks oftentimes demand ransom to be paid in
cryptocurrencies,169 which further limits the investigative possibilities by the competent authorities. It istherefore plausible that criminals would combine the abuse of sophisticated audio-visual deepfakes withextortion attacks demanding alternative means of payment to avoid detection.
60 | Malicious Uses and Abuses of Artificial IntelligenceScenario 4: Online crimes against children. Deepfake technology could be used to create a fake identity
for the purposes of child grooming or to convert the face of an adult to that of a child or minor, thus
raising concerns about entirely new challenges to preventing the online sexual exploitation of children.170
Additionally, deepfakes might be used by criminals to facilitate online child sexual coercion and extortion171
by generating sexually explicit material that depicts the victim or other children. Criminals could also use
deepfakes to depict an offline sexual encounter and then demand payment by threatening to publicly
release the deepfake nude photo or video.172 This possibility is of particular concern due to the growing
availability of self-generated explicit material (SGEM) online that is driven by the growing access of minors
to high-quality smartphones and a lack of awareness of the risks associated with sharing sexually explicit
content on online platforms.173
Scenario 5: Obstruction of justice. Deepfake audio-visual content could be mischievously submitted
as “legitimate” evidence in an attempt to frustrate criminal investigations and judicial proceedings, thus
casting doubt on audio-visual evidence as an entire category of evidence. This would create new legal
hurdles for investigators and lawyers, not to mention undermine the credibility of proceedings, including
the institutions and individuals participating in the same proceedings. Even the administration or justicesystem could be questioned as well. Moreover, existing vulnerabilities in widely-used technologies such
as CCTV or police body cameras could be used in order to replace real-life footage with deepfakes.
Ultimately, the possibility of hacking surveillance camera systems opens the door to conceal any kind of
criminal and malicious practices.
Scenario 6: Cryptojacking. It is possible for deepfakes to become associated with the spread of
malware and cryptojacking. Recently, researchers identified a website devoted to deepfakes that was
being used as part of a cryptojacking scheme. Deepfake hobbyists, which refers to the category ofindividuals who tend to be more likely to have powerful computers than the average individual, are thus
ideal targets for cryptojacking, a malicious attack that seems to exploit computing resources to mine
valuable cryptocurrencies, such as Bitcoin.174
Scenario 7: Illicit markets. The proliferation of deepfake development toolkits and services for malicious
purposes could become an emerging profitable underground market. Deepfake creation services are
already offered in various underground markets and online forums for modest prices.175 In combination
with the CaaS business model,176 the proliferation of tools and “for hire” services online are likely to growin the near future.

Countering Deepfakes
While deepfakes present opportunities for those with malicious intent and could become a significant
threat to society, political systems, businesses, and cybersecurity, there are still measures that can betaken to control and limit the impact of this technology. These include the development of technology for

61 | Malicious Uses and Abuses of Artificial Intelligencedeepfake detection, content authentication, and deepfake prevention, as well as the adoption of policies,
legislation and regulation, awareness-raising campaigns, capacity building, and the creation of channels
for reporting deepfakes (including notice-and-takedown procedures).

Deepfake Detection
Furthermore, manual detection of deepfake videos and images, especially the less sophisticated ones,is still possible, particularly if content moderators or competent authorities are properly trained to detect
scene inconsistencies (such as strange shadows and lighting, outdoor background noise in an indoor video,
sudden changes in the background, and other remarkable details) as well as speaker inconsistencies (likelack of or irregular blinking, facial micro-expressions, a mismatch between facial and body skin tones, lip
movement and audio mismatch, and other similar discrepancies). However, manual identification andhuman filtering of audio-visual inconsistencies is only possible for a small volume of suspicious files. It isneither scalable nor sustainable in light of the surge of deepfakes and the exponentially growing volumeof audio-visual electronic evidence in today’s investigations. Moreover, manual analysis could lead to
mistakes as humans have a psychological predisposition to believe in audio-visual content and a truthdefault tendency.177
In light of the various tools and techniques to create deepfakes, there is currently no technological solutionthat is tailor-fit to effectively detect all types of digital forgeries. Ironically, AI itself might be the answer todeepfake detection. The most popular technique is to use algorithms similar to the ones that were used
to build the deepfakes in question. The goal of this technique is to recognize the patterns showing how
these fake images and audio clips were created, as well as to pick up subtle inconsistencies. AI-enabled
tools like FaceForensics++ have already shown a detection accuracy rate that exceeds the capacity ofmanual analysis.178
Detection is, however, not without its challenges. In 2018, US researchers discovered that deepfake
video faces did not blink normally. Since the majority of internet images show people with their eyes open,
the algorithms were not trained to blink.179 Unfortunately, as soon as this research was published, newdeepfakes appeared with an improved capability to blink. Indeed, the detection of deepfakes becomes
harder as weaknesses are revealed and the technology to fix these are also discovered. Therefore,
the automated systems that were developed to examine videos for errors (such as irregular blinking,inconsistent lighting patterns,180 or distinctive facial expressions) soon became obsolete.181 Another
weakness of AI detection systems is that they work best for celebrities since most of the training occurs
on open-source databases, and there are considerably more images of celebrities online than ordinary
individuals.
An alternative technique consists of applying blockchain to verify the source of the media. With thistechnology, only videos from trusted sources would be approved, decreasing the spread of possibly
harmful deepfake media.182 Tools that leverage the open-source Ethereum blockchain and cryptographic

62 | Malicious Uses and Abuses of Artificial Intelligenceauthentication in the form of hashes183 or mobile apps to facilitate a trusted chain of custody of captured
images or videos184 have also been set forth. Another solution proposes to use the Ethereum blockchainbased approach to prove the authenticity of digital content as well as to identify the original source ofdigital content. It could also be used to assess if the digital content came from a reputable source.185 Other
provenance-checking solutions such as Truepic have also emerged.186
As for deepfake audio calls, the most archaic yet effective way to verify the caller is to hang up and callthem back. Unless a very sophisticated hacking group who can reroute phone calls is behind the act, it
can be relatively easy to detect fake phone calls.187 As with the use of AI to detect deepfakes, the samecan be applied to distinguish real from fake audio clips. A deep neural network detector uses visual
representations of audio clips called spectrograms that are also used to train speech synthesis models.
While to the unsuspecting ear these clips sound basically identical,* spectrograms of real audio versus
fake audio have different representations.188
It is noteworthy that several international organizations, governments, universities, and tech firms are
funding research to develop tools that can detect deepfakes. For instance, UNICRI organized a challenge
at the Hackathon for Peace, Justice and Security in 2019 to challenge research teams around the globe tosearch for a solution to deepfake detection. Microsoft, Facebook, and Amazon also launched a Deepfake
Detection Challenge in 2019 in the hope of accelerating the technology for identifying manipulated
content.189 In September 2020, Microsoft released the Microsoft Video Authenticator, a new deepfake
detection tool that was tested using the datasets of the Deepfake Detection Challenge. Although not
publicly released, the Authenticator analyzes content and provides the user with a confidence score as towhether or not the video might have been manipulated.190
Furthermore, the social media industry can also play a key role in improving deepfake detection by
providing publicly available data to properly train AI-enabled detection tools. For instance, Facebook has
released an open-source database of 100,000 deepfakes to train AI models to spot manipulated videos.191
As the degree of sophistication for generating deepfake technology continues to improve, it will ultimately
take a combination of techniques to enable the detection of synthetic or fake videos and images.

Deepfake Policies
The malicious potential of highly realistic deepfake videos has set off alarm bells in the digital world. As
a result, several large social platforms have revised their user policies to forbid users from uploading or
sharing deepfakes.

* Rita Singh’s Profiling Humans from Their Voice provides an extensive coverage of the forensic aspects of the human voice and the
difficulties of "faking it” at the micro level.

63 | Malicious Uses and Abuses of Artificial IntelligenceAfter the scandal involving several famous female personalities that birthed the deepfake phenomenon,
Reddit banned “fake porn” — deepfake photos and videos that superimpose a subject’s face over an
explicit photo or video without the subject’s permission — in early 2018.192 More recently, in January 2020,
the platform updated its policies to prohibit the impersonation of an individual or entity in a misleadingor deceptive manner, encompassing deepfakes.193 The new policies were made just days after Facebook
updated its own platform policies to ban deepfake videos. Facebook’s new policy does not, however,
cover videos manipulated for the sake of parody or satire, nor does it include shallowfakes such as thecontroversial Pelosi video, a fact that has prompted criticism from political leaders and digital experts.194
Shortly after, Twitter also decided to flag manipulated videos, including deepfakes and shallowfakes, aswell as to ban accounts “deceptively” sharing edited videos with the intent of causing harm.195 Still, one
problem associated with the policy-making principles for deepfakes is that over time, it will become moredifficult to draw the line between what causes harm and what is lawful parody.
Meanwhile at the national level, there have been discussions about the regulation of deepfakes,
predominantly on the basis of concerns that the technology could be abused to interfere with politicalprocesses.
For instance, the Canadian Communications Security Establishment released a report stating thatdeepfakes could be used to interfere in Canadian politics, particularly to discredit politicians and influencevoters. Although there are no specific Canadian laws that forbid deepfakes, it has been suggested thatexistent causes of action might be applicable to address the wrongs committed by a person’s abuse of
deepfake technology, namely: “copyright infringement, defamation, violation of privacy, appropriationof personality, criminal code, human rights complaint, intentional infliction of mental suffering, andharassment.”196
In November 2019, Chinese regulators announced new rules governing video and audio content online,
including a ban on the publishing and distribution of false information or deepfakes online without proper
disclosure that the post in question was created with AI or virtual reality (VR) technology. The Chinese
government stated that beginning in 2020, failure to disclose the use of such technology to create a post
will be considered a criminal offense.197
In the US, several bills that deal with the regulation of deepfakes have been introduced before federal
lawmakers, although none of these bills has become law.198, 199

Recommendations and Considerations for Further Research
As solutions for deepfake detection evolve, the individuals and groups behind the abuse of deepfakes areequally expected to adapt their mod operandi with the aim of evading detection and training their models
to follow counter-detection measures. Deepfakes can, in this regard, become a significant challenge to thecurrent forensic audio-visual analysis and authentication techniques employed by industries, competentauthorities, media professionals, and civil society.
64 | Malicious Uses and Abuses of Artificial IntelligenceIt is necessary not only to make significant investments to develop new screening technology to detect
tampering and irregularities in visual and audio content,200 but also to ensure that such tools are kept up
to date to reflect evolving deepfake creation technology, including current and possible future malicious
abuse of such technology. Effective detection algorithms should also build upon existing solutions anddigital forensic practices in photo, audio, and video analyses. In order to optimize the efforts and address
the current gaps, the development of systems to combat deepfakes should be done in a collaborative
manner between industry and end-users from competent authorities (such as police investigators, crime
analysts, forensic experts and examiners, and other similar agents) and combined with training andcapacity building for these competent authorities, content moderators, and other relevant professionals.
New policy and legislation measures should likewise be employed.201 In particular, those policies
should be technology-agnostic in order to be effective in the long run and to avoid having to review andreplace these on a regular basis as the technology behind the creation and abuse of deepfakes evolves.
Nevertheless, such measures should also avoid obstructing the positive applications of GANs.
Consideration should also be given to include the abuse of deepfakes in current and future initiatives at
the international level to tackle illicit content online by focusing on public-private partnerships, noticeand-takedown procedures, proactive use of detection technology, and closer cooperation with competentauthorities.202
Understanding the creation technology behind deepfakes at an early stage will significantly improve theopportunities for both the detection and development of effective countermeasures.203, 204 Thus, performinga technology watch function is crucial. The role of the academic and research community is also vital,
as there is a growing need for research on deepfakes. Industry and law enforcement professionals
should also continuously develop forward-looking threat assessments on the current and future abuseof deepfakes by malicious actors. Better understanding of the threat can also inform potential policy andlegislative measures to address the common challenges to investigating and countering deepfake abuse.
In spite of the increased popularity of deepfakes, research indicates that many people remain largely
unaware of the existence of such digital forgeries.205 Enhanced efforts to raise awareness on deepfakes
and their associated threats are therefore crucial for empowering the public, different industries, andcompetent authorities to identify fake images, videos, and audio files. In the long run, heightenedawareness will further contribute to limit the potential abuse of deepfakes.

65 | Malicious Uses and Abuses of Artificial Intelligence

Conclusion
This joint report by Trend Micro, UNICRI, and Europol was initiated by a simple question: “Has anyone
witnessed any examples of criminals abusing artificial intelligence?” In the pursuit of answering thisinquiry, the report managed to provide a collective understanding of current and future malicious uses
and abuses of AI.
AI promises greater efficiency and higher levels of automation and autonomy. A subfield of computerscience with many cross relationships with other disciplines, AI is intrinsically a dual-use technology at
the heart of the so-called fourth industrial revolution. As a result of this duality, while it can bring enormous
benefits to society and help solve some of the biggest challenges we currently face, AI could also enable
a range of digital, physical, and political threats. Therefore, the risks and potential criminal abuse of AI
systems need to be well-understood in order to protect not only society but also critical industries andinfrastructures from malicious actors.
Based on available insights, research, and a structured open-source analysis, this report covered thepresent state of malicious uses and abuses of AI, including AI malware, AI-supported password guessing,and AI-aided encryption and social engineering attacks. It also described concrete future scenarios
ranging from automated content generation and parsing, AI-aided reconnaissance, smart and connected
technologies such as drones and autonomous cars, to AI-enabled stock market manipulation, as well as
methods for AI-based detection and defense systems.
Using one of the most visible malicious uses of AI — the phenomenon of so-called deepfakes — thereport further detailed a case study on the use of AI techniques to manipulate or generate visual and audio
content that would be difficult for humans or even technological solutions to immediately distinguish fromauthentic ones.
As speculated on in this paper, criminals are likely to make use of AI to facilitate and improve their attacks
by maximizing opportunities for profit within a shorter period, exploiting more victims, and creating new,innovative criminal business models — all the while reducing their chances of being caught. Consequently,
as “AI-as-a-Service”206 becomes more widespread, it will also lower the barrier to entry by reducing theskills and technical expertise required to facilitate attacks. In short, this further exacerbates the potential
for AI to be abused by criminals and for it to become a driver of future crimes.

66 | Malicious Uses and Abuses of Artificial IntelligenceAlthough the attacks detailed here are mostly theoretical, crafted as proofs of concept at this stage, andalthough the use of AI to improve the effectiveness of malware is still in its infancy, it is plausible thatmalware developers are already using AI in more obfuscated ways without being detected by researchers
and analysts. For instance, malware developers could already be relying on AI-based methods to bypass
spam filters, escape the detection features of antivirus software, and frustrate the analysis of malware. In
fact, DeepLocker, a tool recently introduced by IBM and discussed in this paper, already demonstrates
these attack abilities that would be difficult for a defender to stop.
To add, AI could also enhance traditional hacking techniques by introducing new ways of performing
attacks that would be difficult for humans to predict. These could include fully automated penetration
testing, improved password-guessing methods, tools to break CAPTCHA security systems, or improvedsocial engineering attacks. With respect to open-source tools providing such functionalities, the paper
discussed some that have already been introduced, such as DeepHack, DeepExploit, and XEvil.
The widespread use of AI assistants, meanwhile, also creates opportunities for criminals who could exploit
the presence of these assistants in households. For instance, criminals could break into a smart home byhijacking an automation system through exposed audio devices.
Given the discussions in this paper, it is safe to assume that cybercriminals will progressively integrate AI
techniques to enhance the scope and scale of their attacks, thereby exploiting AI both as an attack vector
and an attack surface, additionally powered by the previously mentioned service-based criminal businessmodel. Consequently, the second part of the report explored plausible future scenarios in which criminals
might abuse AI technologies to facilitate their activities and increase the success of their attacks.
For instance, it is expected that AI will help criminals conduct social engineering at scale by automating
the first steps of an attack through AI-aided content generation, improving business intelligence gathering,and speeding up the detection rate of both potential victims and business process compromise attacks.
Moreover, as defense systems increasingly employ AI-based approaches, criminals are expected to either
directly attack those systems, or use AI for user behavior emulation as well.
The increasing automation of everyday life’s numerous aspects using AI-based systems also inevitably
brings with it a possible loss of control over the same aspects. This would not only broaden the attack
surface, but also create new types of attacks. One novel example is AI-enabled stock market manipulationthat takes advantage of the use of AI-based algorithms in the area of high frequency trading.
Meanwhile, current and upcoming technologies like 5G, in combination with AI, will shape industry andfurther drive automation and smart technologies at scale. Presumably, criminals are likely to target ormanipulate these technologies as well.
In response to the different scenarios described here, the report identified possible countermeasures,ways of mitigating risks, and several other recommendations.
67 | Malicious Uses and Abuses of Artificial IntelligenceIt is also worth emphasizing that close cooperation with industry and academia is a must in order todevelop a body of knowledge and raise awareness on the potential use and misuse of AI by criminals. Not
only will such cooperation anticipate malicious and criminal activities facilitated by AI, it will also prevent,respond to, or mitigate the effects of these attacks in a proactive manner.
Lastly, despite this report’s focus on its misuse, it is undeniable that AI holds a plethora of potential for
positive applications — including critical support for investigating crimes of all types and the fulfilmentof important projects by organizations with global impact. The capacity for these applications, however,is best explored in detail in another paper, and we look forward to reading and learning from the future
work that will be contributed by both industry and academia about the endless possibilities that AI holds
for the benefit of all.
Indeed, an understanding of the capabilities, scenarios, and attack vectors is key to enhancing
preparedness, increasing resilience, and ensuring the positive use of AI to unlock the potential that it
holds.

68 | Malicious Uses and Abuses of Artificial IntelligenceAppendix
YARA Rules for AI-Powered Malware Detection
rule tensorflow{
strings:$CopyrightString= /Copyright 201\d The TensorFlow Authors\./$PathString1= /tensorflow\/c\/c_api[^.]+\.h/$PathString2= “tensorflow/core/framework/”$PathString3= “tensorflow/core/lib/”$DomainString= “tensorflow.org”

condition:(is_py or is_pe or is_elf)
and any of themand positives > 2}
rule pytorch{
strings:$ImportString= “import torch”

condition:
is_py and $ImportString and positives > 2}
rule rapidminer {strings:$a = “rapidminer” ascii nocase
condition:is_jar and $a and positives > 2}

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