Reviewer’s Guide | 2021

Some things needto change around here...

Table of contents
Introduction to Avast One....................................................................... 4
Platform comparisons (Windows, macOS, Android, iOS)......................9
Features in detail.....................................................................................14
Avast One for Windows.....................................................................14
Avast One for Mac............................................................................. 29
Avast One for Android........................................................................39
Avast One for iOS.............................................................................. 48
Resources................................................................................................52
Avast Privacy Policy................................................................................54
Contact....................................................................................................54

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Introduction to Avast One
Proactive, essential protection for life today.
The global pandemic has been an accelerator for PC, Mac, and phone usage
as people work, connect, learn, game, stream, and educate themselves online
more than ever before. The internet has been a gateway for people to connect
with others, to stay in touch with loved ones, and to access information.
Avast believes that people around the world should be empowered to use
the internet and their devices safely, privately, and with high performance,
for free. That’s why Avast was the first digital security company to provide
its hero antivirus product for free, globally, and today over 400 million users trust
Avast with their online protection.
Today, 30 years later, Avast is redefining digital protection for the online
consumer of the modern internet: introducing Avast One, the integrated
service to increase privacy, connect securely, speed up your devices, and staysafe from viruses. Avast One is available as a free version, Avast One Essential,
and as a premium version, Avast One Individual and Avast One Family.
With all-new apps for PC, Mac, iOS, and Android, Avast protects all devices in
the household and makes sure that people get the right protection
at the right time.
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Product overview
The Avast team set out to develop a product that
goes beyond antivirus. Here are some of the highlights:

1Best-in-breed privacy& VPN services

3

Over the last decade, Avast has built new products to protect
against emerging threats to peoples' identity (BreachGuard)
and to surf securely and privately (VPN, AntiTrack). Avast One
unites the best of Avast’s technologies in one product and ina simple, single installation.

Many premiumfeatures are now FREE
The free Avast One Essential versions goes beyond existingproducts and competition by offering many features that werepreviously available only in premium products, such as data
breach monitoring, performance optimization, and VPN
services. It's available for Windows, Android, Mac, and iOS.
It also comes with Ransomware Protection that stops
unauthorized takeovers and unauthorized access to a user's
PC by protecting selected files and folders.

2Free VPN with a massive
5 GB traffic per week
All free Avast One Essential users get 5 GB traffic to surf the
web securely. Avast’s premium Individual/Family users get
unlimited traffic, DNS leak protection, dozens of locations for
streaming and surfing, location masking, and more(see feature set below).

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Product overview (CONTINUED)
4

A personalized dashboard
with shortcuts
The ultimate goal was to make the dashboard understandable
for beginners and powerful for pros. Newcomers will get shortcuts
right on the first screen to start a scan, connect througha VPN, or clean up their devices.
They’ll also see tailored recommendations to improve their privacy,
security, and performance right on the first screen. Users who wantmore will have more control by diving into the individual featuresof Avast One.

5

A patented, free
performance boost
Avast's PC Speedup tool helps prevents a user's PC from theslowdown that occurs over time as users install more and more
applications. A patented algorithm detects programs that
reduces the performance and puts them to sleep when theuser is not actively working with them — in essence, it gives
users that Day 1 performance all-year round. For the first time,
this feature is available in a free product (more on this below).
On top of that, Avast includes a Driver Updater with support
for eight million drivers, ensuring greater stability, performance,
and fixed driver vulnerabilities for most built-in
and connected devices.

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Third-party test results
Avast antivirus products consistently receive high protection scoresfrom third-party testing labs such as SE Labs, AV-Comparatives, and AV-TEST.

AV-Comparatives, 2020
“Top Rated-Product”

AV-Comparatives, July 2021
Mobile Security: 99.6 out of 100 points

AV-Comparatives, July 2021
Anti-Phishing: Highest score achieved
vs. competition (96 out of 100 points)

AV-TEST, June & May 2021
Protection Score: 6 out of 6 points

AV-Comparatives, February - May 2021
Real World Protection test: 99.9 out
of 100 points

SE Labs, January - March 2021
Home Anti-Malware Protection Test: AAA

NEW AV-TEST, July 20211
In all test categories - PROTECTION,
USABILITY and PERFORMANCE
Avast One achieved very good results.

AV-Comparatives, April 2021
Impact on Performance: Advanced+
award (highest award)

SE Labs, April - June 2021
Home Anti-Malware Protection Test: AAA

Full results next page

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AV-TEST certifies
Avast One is fast and secure.
With the generational leap of Avast One and its major increase in built-in technologies,
Avast's goal was to deliver the same level of protection whilst minimizing any performance
impact, and maintaining our performance against the competition. On top of internal lab
tests, Avast worked with one of the leading security test institutes, AV-test.org on intensive
lab tests and benchmarks. The results:
Protection

Performance

AV-Test certified the same level of protection when detecting
malicious code as the existing Avast Antivirus.

Avast One does not introduce any noticeable performance
impact* compared to its predecessor, despite the additionof multiple new technologies.

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Protection 6/6

100%

99.96%BLOCKING OF "REAL WORLD" ATTACKS(147 ATTACKS)

DETECTION OF PREVALENT MALWARE(9,444 FILES)

Performance Score: 6/6
Total impact Avast One: 9.77%
Total impact Avast Free: 9.17%
For competitive results, go to:https://www.av-test.org/en/antivirus/home-windows/
For full test results, go to:https://www.av-test.org/fileadmin/pdf/reports/AV-TEST_
Avast_One_Test_Results_Aug_2021_EN.pdf.

* Tested on PCs with the following specifications:Standard PC (HP 280 G2 (1EX45EA): Intel i3-6100 256 SSD, 8 GB RAM)
High-end PC (HP Z240 (Y3Y82EA): Intel i7-7700, 256 SSD, 16 GB RAM)

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ComparisonsIntroduction

Comparison table - Essential vs. Paid |Comparisons

Windows

Mac

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Resources

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Essential

Individual

FamilyManualAutomatic

Automatic

Windows

The following table outlines the features in the free product, Avast One Essential,
and the Avast One Individual and Family paid versions with advanced functionality.
Device protection

Essential

Individual

FamilyAntivirus & File Shield

Essential

Individual

FamilyVPN

Ransomware Protection
FirewallOnline privacy

Traffic
Basic

Advanced

Advanced

Multiple Locations

Web Shield

P2P Support

Behavior Shield

Streaming Servers

Scan Center

Browser Cleaner

Sensitive Data Shield-

Data Breach Scan

Web Hijack Guard-

Data Breach Monitoring

Webcam Protection-

Software Updater
5 GB / week
1 location

Unlimited data
55 locations
34 countries

Unlimited data
55 locations
34 countries-

PC Speedup

1 emailBrowser Password Protection

Smooth perfomance-

Driver Updater-

Disk Cleaner-

Family Sharing--

More accounts for you to sharewith your family with a single
subscription.

--

Number of accounts

-

1

6

Number of devices

-

5

30

Family Sharing
5 email

30 emails

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Comparison table - Essential vs. Paid |Device protection

Essential

Antivirus & File Shield

Individual

FamilyOnline privacy

Essential

5 GB / week
1 location

Traffic

Web Shield

P2P Support-

Scan Center

Streaming Servers--

Tracking Prevention

Unlimited data
55 locations
34 countries

Windows

Mac

Android

iOS

Resources

Privacy Policy

Essential

Individual

Contact

macOS
FamilyVPN

Ransomware Protection

Web Hijack Guard

IndividualComparisons

Unlimited data
55 locations
34 countries

Smooth perfomance
Disk Cleaner-

Photo Cleaner-

App Uninstaller-

FamilyFamily Sharing-

Browser Cleaner

More accounts for you to sharewith your family with a single
subscription.

--

Data Breach Scan

Number of accounts

-

1

6

Number of devices

-

5

30

Data Breach Monitoring

1 email

5 email

30 emails

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Comparison table - Essential vs. Paid |Device protection
File Shield

Essential

Individual

FamilySecure connection

Essential

IndividualComparisonsTraffic

Web Shield

Multiple Locations

App Shield

Wi-Fi ScannerMac

Android

iOS

Resources

Privacy Policy

Contact

Essential

Individual

FamilyManualAutomatic

Automatic

Android
FamilySmooth perfomance
Junk Cleaner

VPN

Virus Cleaner

Windows

5 GB / week
1 location

Unlimited data
55 locations
34 countries

Unlimited data
55 locations
34 countries-

App Hibernation

Scan Center

Family sharing
Personal identity

Essential

Individual

FamilyData Breach Scan
Data Breach Monitoring

1 accountlogin email

Unlimitedaccounts

More accounts for you to sharewith your family with a single
subscription.

Number of accounts

1

6

Number of devices

530

Unlimitedaccounts

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Comparison table - Essential vs. Paid |Device protection
Web Shield

Essential

Individual

FamilySecure connection

Essential

IndividualComparisonsMultiple Locations

Mac

Android

iOS

Resources

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Essential

Individual

FamilyUnlimitedaccounts

Unlimitedaccounts

iOS
FamilyVPN
Traffic

Windows

Smooth perfomance
Data Breach Scan

5 GB / week
1 location

Unlimited data
55 locations
34 countries

Unlimited data
55 locations
34 countries

Data Breach Monitoring-

1 accountlogin email

Photo Vault

Limited40 photos

Family sharing
More accounts for you to sharewith your family with a single
subscription.

--

Number of accounts

-

1

6

Number of devices

-

5

30

Avast One Reviewer's Guide 13Windows

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Windows
In 2021 and beyond, users need far more than an antivirus.
Attacks on PCs have reached record highs in 2021, growing ever more diverse withransomware and tech support scams. VPNs have become a requirement for browsing the web
safely and restriction-free. On top of staying private and secure, users care about the healthand performance of their device.
Avast One is Avast’s response to this changing landscape,combining best-in-breed technology. Based on Avast’s six
proprietary detection engines and massive threat detection
network which is among the most advanced in the world,
Avast detects and stops threats in real time.
Machine learning and artificial intelligence technologies
leverage insights of hundreds of millions of endpoints to
help Avast improve the detection rates 24/7.

Avast’s antivirus is certified as top performing protection
by leading independent testing institutions AV-TEST, AVComparatives, AVLab, as well as SE Labs, whose tests are
certified by the Anti-Malware Testing Standards Organization,
AMTSO. An advanced VPN, ransomware protection, andAvast’s web shield keep each user safe and private while
Avast’s patented PC Speedup and cleaning engines help
keep PCs fast and healthy.

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Windows
Avast One provides a personalized experience.
Avast's vision is to rethink the
all-in-one user experience, making
it simple for beginners and more
powerful for advanced users. In one
glance users see if there is anything tosecure or improve — and allows themto do it with one click, or will step in
automatically to defeat immediate
threats or solve issues.
Diving deeper, advanced users can explore dozens of powerfulfeatures to further lock down, secure, or optimize their system
more than ever before. Here is what Avast has done to go
beyond antivirus and deliver a next generation integrated
protection, privacy, and performance service.

Personalized dashboard

Smart Scan

Avast One’s dashboard is tailored to the user’s digital
experience. Recommendations, critical messages, andtips appear when users need them most. It’s our idea
to show users at a glance if their PC is secure, private, andhealthy, with a personalized overview that saves people
time, and reduces distracting pop-up messages.

For over a decade, Avast’s Smart Scan has been the mostused and loved feature of Avast Antivirus. The nextgeneration Smart Scan included in Avast One covers evenmore areas of the PC, including Junk cleaning, performanceissues, and Data Breaches.

Shortcuts
Users can scroll down to find 1-click-actions to quickly
enable VPN, clean up their PC, or start a Deep Scan of
their PC. Over time, Avast will add more shortcuts
and allow users to customize their own.

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Do Windows 10 or 11 need Avast One?
Yes, both Windows 10 and the upcoming Windows 11 needan all-round protection service, which Avast One provides.
Avast One goes beyond malware andviruses, guarding people against a fullrange of cyberthreats to their security
and privacy. Avast One even helps
improve the performance of a PC.
These are the top three reasons whyusers need Avast One even on future
Windows versions:

1Comprehensive
privacy protection

In addition to malware protection, Avast One comeswith a privacy protection suite which gets rid of
tracking cookies, monitors for compromised accounts
with data leak monitoring, and protects passwords
stored in the browser.

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Protection | Avast One Essential (FREE)
Avast One Essential protection features cover not just the latest malware,
but also create an additional shield against ransomware and tracking cookies.
File Shield
Avast One’s lightweight, live File Shield actively scans forthreats within all programs and files on the hard drive as they
are opened, run, modified, and saved.
If malware is detected, File Shield prevents the program
or file from infecting people’s PC. If it’s infected, it tries
to repair the file so people can safely use it. If that’s notpossible, then File Shield will move it to quarantine or
let the user delete it. File Shield also blocks potentiallyunwanted programs. These are apps mostly designed totrick you into subscribing to unnecessary products, or evenscam you. In some cases, these apps get sideloaded withother (legitimate) software you want to install.
Behavior Shield
Behavior Shield, part of File Shield, monitors all the programs
that are currently running on a PC, and carefully observes
their behavior. Behavior Shield does not ‘watch’ what theuser is doing, only what the software itself istrying to accomplish.

Ransomware Shield
If it notices something that is uncharacteristic for that
program type (for example, a PDF reader program trying
to download something from the web), Behavior Shield istriggered, stops the action, and reports the behavior to theuser — preventing malicious programs from becoming
deeply entrenched in a PC. Any undiscovered threats willthen be reported and added to our ever-expanding threat
database. Users can add programs they trust and Behavior
Shield will leave these unsupervised. Information on trusted
programs is fed into Avast’s extensive cloud base.

Ransomware is a type of malware, or malicious software, thattakes files — and sometimes entire computers or mobile
devices — hostage. Besides Avast’s threat detection engine
which protects users from ransomware, Ransomware Shield
gives users the option to select individual files and folders
to be protected by an additional layer of security. The featurethen monitors which applications try to access the selected
files, and if an application wants access that could allow
altering the files, Avast verifies the application first, before
allowing this. To do so, Avast checks if the program trying toaccess the files is marked as clean in the Avast cloud.
Avast also checks the digital signature of the program,and if it tries to inject code. This way, the user is protectedfrom various types of ransomware including screen lockers,
doxxing, and file-coders. Ransomware Shield stops bothransomware and untrusted apps from changing, deleting,or encrypting all the user’s files, documents and photos.

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Protection | Avast One Essential (FREE)Web Shield

Scan Center

Quarantine

As more and more online services are moving to HTTPS bydefault, or even HTTPS-exclusive, hackers are increasingly
targeting these sites. Web Shield scans HTTPS sites formalware, and verifies website certificates. HTTPS scanning
detects and decrypts TLS/ SSL-protected traffic andchecks it for malware, spyware, malicious scripts and otherthreats. Additionally, this feature adds compatibility for
SPDY+HTTPS/ HTTP 2.0 and QUIC traffic.

Scan Center allows the user to go deeper and run a full PC
Scan, top to bottom. The user can also run a boot-time scan
to detect boot sector viruses and get rid of them before they
can do any harm.

Quarantine works to isolate potentially dangerous files or sends
them to the Avast Threat Labs for analysis.

The targeted scan lets the user scan specific sections of their
hard drive on a regular schedule.

Files in Quarantine cannot run or access the computer systemand data, so any malicious code contained within a file isunable to harm the PC.

In other words, Avast checks HTTPS sites without disrupting
users’ browsing experience. Also included in Web Shield is
Avast’s Script Scanning mechanism that prevents browsers
and other applications from running potentially malicious
scripts, including remote threats from the web, and outside
sources.Script Scanning protects users from websites that
contain malicious code, such as technical support scam sites.
On top, Avast has added protection against botnet attacks,
preventing PCs from being hijacked and being used as partof global botnets. It blocks malware communication with
their Command & Control (C&C) servers, which will break thefunctionality of such malware. Avast also prevents exfiltration
attempts, meaning when malware is trying to send sensitivepieces of information back to a malware server, this isblocked. Once Avast detects such an attempt, the software
kills and deletes the process on the user’s machine.

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Protection | Avast One Essential (FREE)
Browser Cleanup
Firewall
Avast Firewall offers strong outbound protection andconfigurability, while remaining invisible to the user. Whenset to ‘Public Network’ mode, Avast Firewall protects theuser’s privacy by blocking all incoming connections from the
network, preventing sensitive data leaks and traffic-stealing
attacks. It also allows the user to easily control both inboundand outbound traffic.

Browser Cleanup cleans users’ browser history, cachedimages, cookies, and other junk with just one click, to help
keep their activity private and free up disk space.
Browser Cleanup supports all the latest browsers including
Edge (Chromium), Firefox, Safari and Chrome and removes
more than the built-in cleaning solutions, such as infamoustracking cookies.

Avast Firewall monitors all network traffic between the PC
and the outside world to protect users from unauthorizedcommunication and intrusions. This feature is designed torequire minimal input from the user.
To ensure the user is protected, all they need to do is keep the
Firewall enabled and, when prompted, select the appropriate
Firewall profile for each network they connect to. Users canchoose between a private and a public network. If the user
selects Public, no one on the same network will be able toaccess shared folders or devices. Users will also be able tocheck the actual internet traffic per app to detect apps that
consume a lot of bandwidth:

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Protection | Avast One Individual/Family (PAID)
Webcam Protection
Webcam Protection blocks untrusted apps from hijacking
the webcam to spy on users and their families. Whenselected in settings, Webcam Protection can ensure that allapps, regardless of whether they are malicious or not, ask forpermission before accessing the webcam.

Advanced Firewall
Avast One’s paid Firewall hides many identifiers of the user’s
PC from other devices on the network, such as its name,type, and email address.
In addition, Avast One will notify the user the moment
other devices scan the PC for open ports. Avast One will
also inform users about Address Resolution Protocol (ARP)
spoofing attacks: ARP spoofing lets a hacker infiltrate
a local network (LAN) by masking their computer as a
network member. Cybercriminals use ARP spoofing tosteal information with man-in-the-middle attacks, where ahacker intercepts a conversation and impersonates bothparticipants to collect the information being transmitted.

Web Hijack Guard

Sensitive Data Shield

Fake banking and shopping sites rank among the biggest
threats online, causing losses of hundreds of millions every
year. This is often caused by DNS hijacking: Malware exploits
vulnerabilities in a user’s router and surreptitiously redirects
them away to a rogue Domain Name Server (DNS).

Sensitive Data Shield provides an extra layer of spyware
protection, beyond what the free Avast One Essential offers.
It scans and protects the sensitive documents on the user’s
computer against unauthorized access and malware.

Therefore, the user no longer visits their intended destination,such as their bank’s website, but instead ends up on a fakesite that looks just like the real thing. When the user tries tolog in, thieves capture the user’s login details and then use
them to access the real site. Web Hijack Guard encrypts the
traffic between an Avast-protected device and Avast’s own
DNS server, to ensure users access the right sites.

Sensitive Data Shield helps secure personal informationby controlling which applications have access to sensitive
documents. It works by scanning the user’s computer for all
popular document types (.pdf,.doc/.docx,.xlsx,...) and thencategorizing them into several categories (e.g. tax documents,
payroll, airline tickets, etc.) based on keywords in the
documents.
Avast One then offers the user to select those that should
only be accessible by the PC’s local user account.This scanis performed locally on the device, and Avast doesn’t send
anything back to its servers.

Introduction

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Privacy
The internet provides many opportunities making our lives more convenient. However, many services are based onaccessing user data, and often personal data gets stolen in data breaches, which leaves many users in uncertainty
about the control they have over their own data. Avast One’s comprehensive privacy features make sure that users
are able to surf anonymously, wipe away traces they may leave behind, and keep their identity safe with a built-in VPN
and multiple privacy features:

VPN
Avast One Essential suite comes with a powerful VPN, helping
users surf privately on public networks, avoid falling victim to
malicious networks, third-party spying, and access content
in their home country while traveling.
Avast One VPN is built on the most widely used and trusted
protocol: OpenVPN. It is regarded as the most trusted protocol
because it is open source. The VPN is paired with OpenSSL
libraries, running everything over the UDP protocol for best
connection speeds: The UDP protocol is used to transfer data
packets to a designated address (similar to TCP).

However, unlike TCP, UDP does not wait for a receive
acknowledgement, which makes it a lot faster.
If it is detected that the internet provider blocks UDP,
Avast attempts a fallback to the TCP transport protocol,
to circumvent the restriction.

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VPN | Avast One Essential (FREE)
VPN traffic

Optimal location

256-bit Advanced Encryption

Location masking

The VPN allows users to establish a secure connection with a
5GB/week traffic limit, a unique offering even in competitive
VPN products.

Avast One’s built-in VPN includes a handy Optimal Location
setting. Once the user switches on the VPN, there’s nothingelse to set up: Avast VPN algorithms take into consideration
server proximity to ensure the best performance, no matter
where the user is — automatically.

Once the VPN is enabled, all traffic from the user to theserver is being encrypted using AES 256-bit encryption,
making it virtually uncrackable. It’s the same encryption
standard used by banks, credit card companies, andgovernments to protect their data.

An IP address is one of the main ways advertisers, internet
service providers and others keep track of users across theweb. It can also reveal a user’s real-world location.

Infrastructure load balancing

DNS leaks protection

All of the Avast VPN gateways run on dedicated hardware
servers with enough excess capacity to maintain performanceeven under peak loads. Avast runs smart systems on top that
automatically balance traffic across different servers to makesure none of them get overloaded, and all of them
operate smoothly.

DNS leaks could reveal a user’s IP address by accidentally
revealing the address to the ISP. A DNS leak refers to asecurity flaw that allows DNS requests to be revealed to ISP
DNS servers, despite the use of a VPN service to attempt toconceal them. In such a case an ISP or other entities can see
the apps used and the website a user visits.

Automatic connection
Each time the user connects to an untrusted network, the VPN
automatically turns on so the user always remains secure.

Smart Hints
Smart Hints remind the user when they might need extra
security and privacy. Based on their online behavior likeconnecting to an untrusted network, visiting a banking site,
visiting a site with sensitive content, and more, Smart Hints
suggests creating a secure VPN connection.

Avast servers act as a mask that provides a new IP address, so
the geographic location and thus your identity stays hidden.

Single shared IP
Whenever connected to one of the Avast servers, the same IP
address is revealed as others also are connected to it – making
it that much harder for the traffic on that server to be associatedwith anyone. Sharing one’s IP address with other people also
makes it harder to profile an individual’s online behavior.

Avast’s extra layer makes sure that all DNS requests are
encrypted on top. DNS requests are encrypted by Avast
and sent to Avast secure DNS servers to protect users frompossible DNS leaks that could reveal a real address. This
ensures user privacy from an ISP and any other on-patheavesdropper.

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VPN | Avast One Individual/Family (PAID)
VPN traffic

P2P support

The premium version of the VPN comes with unlimited
traffic for all use cases, including streaming and P2P
activities. Users will not be throttled or cut even when using
hundreds of gigabytes of traffic.

Selected Avast One VPN servers have been optimized tosupport peer-to-peer (P2P) activities, and are marked out inthe selection screen. In order to use the P2P server, a user
does not have to be physically located in the same location
as the P2P friendly server.

Multiple locations
Premium users have the ability to freely switch between
54 locations, scattered over 34 countries, so they’re able toaccess the content they want without any restrictions.

Streaming servers
Avast runs servers optimized for streaming so the user
can pick up their favorite TV shows right where they left
off — stutter free. No trial and error to find them either:
these streaming-friendly servers are marked out in thelist of countries with the video icon.

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Privacy and Identity features | Avast One Essential (FREE)
On top of the VPN, Avast has implemented password protection and browser privacy features.

Password Protection (limited)

Browser Cleaner

Enables a user to find out if their accounts have been
compromised due to a data breach. As a free and paid user,
they can scan databases of data breaches to see if thepasswords of their online accounts have been exposed.

Browser Cleaner cleans up online traces and temporary datafrom over 25 browsers, including Edge, Chrome, and Firefox®.
It helps protect user privacy by removing leftover data thatbrowsers can’t delete by themselves, such as Adobe Flash
Cookies, and optimizes the browser database to troubleshootand speed up the browser.

The paid version of this feature offers breach monitoring
and browser protection on top (see below).

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Privacy and Identity features | Avast One Individual/Family (PAID)
Password Protection
In the premium version, a user can set up monitoring toreceive breach alerts when the password to an online
account has been compromised in a data breach, helping theuser to quickly change their passwords to remain secure. It
supports five email addresses per account.
Password Protection also secures a user’s passwords stored
in their web browsers against malware and unwanted
applications. A user can specify which apps have access toreading, changing, or deleting passwords found in Google
Chrome and Mozilla Firefox.

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Performance | Avast One Essential (FREE)
A PC’s health and speed degrades over time. Background apps, cache files, outdated programs, problematic settings, and ancientdrivers can wreak havoc on a computer. The issue ranges from slow boot times to overheating or Wi-Fi dropouts. Even crashes orloud fan noises or low battery life are common results of a PC that’s getting a bit long in the tooth. Avast One comes with best-in-classand even patented technology to help keep new PCs fresh and revive old computers 24/7.
PC Speedup
Most often, the cause of PCs slowing down over time is ahigh amount of programs installed and used, not hardware
wear and tear. This is where PC Speedup, powered by its“Program On Demand' Technology, comes in. Many programs
installed, such as iTunes, Skype, or Adobe Reader come withbackground processes, Windows services, startup items, andscheduled tasks. These program components are often still
active even when the corresponding program isn’t beingused.
For example, even when iTunes isn’t running, it’s runningmany background tasks. This causes…

PC Speedup revives a PC by stopping programs (and theirprogram components mentioned above) that are rarely
used from quietly draining processor power, such as instantmessaging tools, screen capture utilities or driver control
panels. The built-in automatic Start-Stop Mode allows any
programs that a user has put to sleep to be reactivatedin a single click. When finished using them, PC Speedup
automatically deactivates them again.
To help users make the best decision, there are descriptions
for the most commonly known applications.

Software Updater (manual)Rescue Center

Avast studies have shown that more than half of programs
installed on users’ PCs are no longer up to date, which canlead to vulnerabilities and problems running these programs.
Avast One’s built-in Software Updater helps users update
their software and apps by listing all the out-of-date
programs and applications on the device, allowing users to
update them with a single, convenient click.
Avast supports the most commonly installed programs,
including Skype, Firefox, Adobe Reader, or VLC Player andare adding more over time.

Rescue Center allows a user to undo all optimization steps
such as programs put to sleep, with the exception offiles deleted using Disk Cleaner.

 RAM to be tied down Constant usage of CPU resources An increase in hard disk activities Reduced battery life Annoying info messages and splash screens

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Performance | Avast One Individual/Family (PAID)
Disk Cleaner
Windows® and its programs produce an enormous amountof data residue. They generate logs in the background, create
history lists, and store temporary files en masse. This is often
dozens of gigabytes, resulting in crashes, slowdowns, andissues installing and running programs.
Disk Cleaner removes clutter from more than 200
programs and Windows features, making it one of the mostcomprehensive cleaners. It removes non-personal data andonly junk files, such as: Leftover installation files: Residue from MSI (Microsoft®
Installer) installations. Many programs make use of the
MSI installation routinely but often leave behind traces
afterwards.
 Windows® error reporting: When programs crash,
Windows® creates a report that contains not only
information on the error that caused the crash, but also
personal user information (e.g. files that were open in the
program that crashed).

Driver Updater Temporary system files: Many programs and Windows®
functions create files for interim storage (e.g. TMP files) thatare required for program execution. Programs often “forget”
to delete these temporary files later and sometimes leavebehind personal user information.

Disk Cleaner removes this type of data from not just
Windows but also popular applications, such as Steam, all
Windows Store apps, Skype, Cyberlink products, or even
NVIDIA drivers.

Driver Updater helps the user's PC work smoothly withconnected printers, scanners, cameras, and other devices
by automatically scanning, fixing, and updating more than 8
million drivers.
Drivers are among the most critical software on a computer:
Old, missing, or corrupt drivers cause crashes or stop a PC
and plugged-in devices from working properly. Avast’s all-new
Driver Updater now scans for 8 million drivers and installs thevery best in one click. The driver engine scans in real-time soa user downloads the latest drivers. The drivers are installed
one by one, to reduce the risk of hardware conflicts.
To prevent supply-chain-attacks, the Avast Threat Labs
checks every single driver for viruses, and certifies them ifthey are clean. Plus, Avast’s automated systems do a test
installation of every single driver on Windows 7, 8.1 and 10, forfull reliability before they are delivered to the user.

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Why Macs need an all-round health, security, and privacy suite
MacOS malware is on the rise and even the latest Macs slow down over time.
Avast's internal surveys and studies haveshown that Mac users care about theirdevices’health and want them to run fast,smooth, and crash-free to keep them aroundfor longer. Many users don’t believe that
MacOS can help protect theirsecurity enough.

Avast One for Mac delivers powerful cleaning and healthcapabilities, making sure each Mac feels like it did on Day 1.
To bolster Mac security beyond its built-in solutions, Avast
has added its advanced antivirus engine to protect users
from new and unknown malware strands, phishing attacks,
and other scams.
In addition to pure malware protection, Avast One comeswith data leak monitoring to help protect Mac users’
privacy. The built-in VPN lets users choose from a variety ofservers to free them from restrictions, and help them surf
privately.

Smart Scan
The next-generation Smart Scan now covers evenmore areas of the Mac, including VPN, Junk cleaning,
Performance issues, or Data Breaches.

Main concerns related for Mac
Concerns solvable via technology: 46%

Dashboard
The new dashboard sets itself apart from all previous
Avast Mac versions and the competition. Avast One gives
recommendations and publishes critical messages and tips
at the right time, precisely when the user needs them. Thisway, the user does not need to look for individual features,but instead sees them presented on the Avast dashboard
when they are most likely needed.

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Protection | Avast One Essential (FREE)
Avast One features protect Mac users
from all types of malware.
All shields are enabled by default and users can adjust or
disable any shield. Avast Security uses kernel or system
extensions, depending on the MacOS version, to protect andsecure a user’s Mac, and to enable it, a user has to allow themin MacOS System Preferences (MacOS requires user approval
before loading newly-installed third party extensions).

File Shield
Avast One’s lightweight, live File Shield actively scans forthreats within all programs and files on the hard drive as they
are opened, run, modified, and saved. If malware is detected,
File Shield prevents the program or file from infecting people’sMacs. If it’s infected, it tries to repair the file so people cansafely use it. If that’s not possible then File Shield will move it
to quarantine or let the user delete it.

Web ShieldRansomware Shield

Scan Center

As more and more online services are moving to HTTPS bydefault, or even HTTPS-exclusive, hackers are increasingly
targeting these sites. Web Shield scans HTTPS sites formalware and other dangers and replaces them with Avast’s
own. Webshield checks the server certificate, decrypts the
traffic and scans the content for malware. Once this is done,
it signs the traffic with a newly generated certificate which isaccepted and trusted by browsers. This ensures that the traffic
is clean and the user has a secure browsing experience.

Ransomware is a type of malware, or malicious software, thattakes files — and sometimes entire computers or mobile
devices — hostage. Besides Avast’s threat detection engine
which protects users from ransomware, Ransomware Shield
gives users the option to select individual files and folders tobe protected by an additional layer of security.

Avast’s Scan Center runs a scan for all sorts of Mac malware— from top to bottom. Avast’s targeted scan lets users scan
specific sections of their hard drive on a regular schedule.

The feature then monitors which applications try to access theselected files, and if an application wants access that could
allow altering the files, Avast verifies the application first,
before allowing this. To do so, Avast checks if the program
trying to access the files is marked as clean in the Avast cloud.
Avast also checks the digital signature of the program, and if ittries to inject code. This way, the user is protected from various
types of ransomware including screen lockers, doxxing, andfile-coders. Ransomware Shield stops both ransomware anduntrusted apps from changing, deleting, or encrypting all theuser’s files, documents, and photos.

With this feature, users can quarantine potentially dangerous
files or send them to the Avast Threat Labs for analysis. Filesin Quarantine cannot run or access the computer system anddata, so any malicious code contained within a file is unable toharm the Mac.

HTTPS scanning decrypts malicious code inside TLS/SSLprotected traffic. Additionally, this feature adds compatibility
for SPDY+HTTPS/ HTTP 2.0. In other words, Avast checks
HTTPS sites without disrupting users’ browsing experience.

Quarantine

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Protection | Avast One Individual/Family (PAID)
Web Hijack Guard
Fake banking and shopping sites rank among the biggest
threats online, causing losses of hundreds of millions ofdollars every year. This is often caused by DNS hijacking:
Malware exploits vulnerabilities in a user’s router andsurreptitiously redirects them away to a rogue Domain Name
Server (DNS).
Therefore, the user no longer visits their intended destination,such as their bank’s website, but instead ends up on a fakesite that looks just like the real thing. When the user tries tolog in, thieves capture the user’s login details and then use
them to access the real site. Web Hijack Guard encrypts the
traffic between an Avast-protected device and Avast’s own
DNS server, to ensure users access the right sites.

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Privacy
Everyone has the right to privacy online, whether it’s what they’re looking at or who they are.
While macOS has built-in privacy protection features, Avast One goes the extra mile byoffering a fully-functional VPN solution and data breach monitoring techniques.

VPN
Going beyond Apple's private relay functionality, Avast One’s
powerful VPN helps users surf privately, avoid booby-trapped
networks, access content in their home countries while
traveling, and be protected from spies.
Avast One VPN is built on the most widely used and trusted
protocol: OpenVPN. It is regarded as one of the most trusted
protocols because it is open source.
Avast paired it with OpenSSL libraries, running everythingover the UDP protocol for best connection speeds. If it
is detected that the internet provider blocks UDP, Avast
attempts a fallback to TCP to circumvent the restriction.

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VPN | Avast One Essential (FREE)
VPN traffic

256-bit Advanced Encryption

Location masking

The VPN allows users to establish a secure connection with a
5GB/week traffic limit, a unique offering even in competitive
VPN products. In Essential, the VPN location is automaticallychosen for the user.

Once the VPN is enabled, all traffic from the user to theserver is being encrypted using AES 256 -bit encryption,
making it virtually uncrackable. It’s the same encryption
standard used by banks, credit card companies, andgovernments to protect their data.

An IP address is one of the main ways advertisers, internet
service providers and others keep track of users across theweb. It can also reveal a user’s real-world location. Avast
servers act as a mask that provides a new IP address, so thegeographic location and thus your identity stays hidden.

DNS Leaks Protection

Single Shared IP

DNS leaks could reveal a user’s IP address by accidentally
revealing the address to the ISP. A DNS leak refers to asecurity flaw that allows DNS requests to be revealed to ISP
DNS servers, despite the use of a VPN service to attempt toconceal them. In such a case an ISP or other entities can see
the apps used and the website a user visits.

Whenever connected to one of the Avast servers, the same IP
address is revealed as others also are connected to it – making
it that much harder for the traffic on that server to be associatedwith anyone. Sharing one’s IP address with other people also
makes it harder to profile an individual’s online behavior.

Optimal Location
Avast One’s built-in VPN includes a handy Optimal Location
setting. Once the user switches on the VPN, there’s nothingelse to set up: Avast VPN algorithms take into consideration
server proximity to ensure the best performance, no matter
where the user is — automatically.

Infrastructure load balancing
All of the Avast VPN gateways run on dedicated hardware
servers with enough excess capacity to maintain performanceeven under peak loads.
Avast runs smart systems on top of that and automaticallybalance traffic across different servers to make sure none ofthem get overloaded, and all of them operate smoothly.

Avast’s extra layer makes sure that all DNS requests are
encrypted on top. DNS requests are encrypted by Avast
and sent to Avast secure DNS servers to protect users frompossible DNS leaks that could reveal a real IP address. This
ensures user privacy from an ISP and any other on-patheavesdropper.

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VPN | Avast One Individual/Family (PAID)
VPN Traffic

P2P Support

The premium version of the VPN comes with unlimited traffic
for all use cases, including streaming and P2P activities.
Users will not be throttled or cut even when using hundredsof gigabytes of traffic.

Selected Avast One VPN servers have been optimized tosupport peer-to-peer (P2P) activities, and are marked out inthe selection screen. In order to use the P2P server, a user
does not have to be physically located in the same location
as the P2P friendly server.

Multiple Locations
Premium users have the ability to freely switch between
54 location scattered over 34 countries, so they’re able toaccess the content they want without any restrictions.

Streaming Servers
Avast runs servers optimized for streaming so the user canpick up their favorite TV shows right where they left off —stutter free. No trial and error to find them either: thesestreaming-friendly servers are marked out in the list of
countries with the video icon.

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Privacy and identity features | Avast One Essential (FREE)
On top of the VPN, Avast has implemented multiple anti-fingerprinting and anti-tracking techniques.

Data Breach Monitoring (limited)
Data Breach Monitoring enables a user to find out if their accounts havebeen compromised due to a data breach. As a free and paid user, they
can scan data lists of data breaches to see if the passwords of their
online accounts have been exposed.

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Privacy and identity features | Avast One Individual/Family (PAID)
Data Leak Monitoring
Each user can set up monitoring to receive breachalerts when the password to an online account has been
compromised in a data breach, helping them to secure thoseaccounts by changing their passwords. It supports five emails
per account.

Tracking Protection
Advanced Tracking Protection is designed to keep users’
identity safe from the latest online tracking techniques. Each
user has a unique digital fingerprint which is a profile of eachuser built by advertisers based on online behavior and otherdata like their device (screen resolution, operating system,
location, and language settings), and browser settings — that
don’t require leaving tracking cookies on users’ devices.
This digital fingerprint is used by advertisers to show
targeted ads and to influence purchasing decisions, and it
can also be used for price discrimination. Advanced Tracking
Protection works by injecting fake information into the datathat makes up each digital fingerprint. This action changes
the information that trackers and other third parties can see
about each user.

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Performance | Avast One Individual/Family (PAID)
A Mac's health and speed degrades over time and with more junk and apps that accumulate. The issue range from slow boot times tooverheating or Wi-Fi dropouts. Even crashes or loud fan noises or low battery life are common results of a Mac suffering from junk data.
Disk Cleaner
A clean Mac is a fast Mac. File clutter can lead tounresponsive applications and reduced disk space, which
in turn can slow things down quite drastically. Removing
old files, such as temporary trash data or junk files, will help
alleviate these issues. Here’s what Avast cleans: Browser Caches: Safari, Chrome, and Firefox browsers
store non-critical temporary files and cookies in a cachefolder. Deleting this cache not only frees up drive space,but can help protect privacy as they could contain personal
information such as login data or websites you visited.

Crash Reports and Junk Files

It also helps fix problems with old cache files. If a user has
frequent problems accessing websites, clearing the cache
could help fix this.

MacOS and third-party applications automatically create
temporary files, which aren’t critical but waste a lot of drive space.
They include leftover data from applications that may have been
uninstalled ages ago or programs like Xcode or Safari.

App Uninstaller

Photo Cleaner

Even after an app is uninstalled, it can leave behind data. Avast’s
App Uninstaller safely removes all wasteful app data, including:Scans each user’s photo library for blurry, poorly-lit andduplicate photos that a user might no longer need. Avast willthen show the user which ones can be deleted.

 Preferences: Files that include settings of unwanted apps.
 Temporary data: Files the apps needed when running.
 Saved states: Data required for the MacOS “Resume” feature.
 Containers: The core files of all apps on a user’s computer.

Avast will not proactively get rid of any photos. Using OpenCV(a library for real-time computer vision) Avast is capable ofdetecting poor photos quickly.

 Log Files: Applications create logs to record normal
operation or how they crashed. These files are only
necessary for developers or when you need to send crashlogs to a software maker. In most cases, they won't beneeded, so they are safe to remove.

 External Drives Junk: System files that MacOS adds toexternal files formatted for other operating systems can besafely deleted to free up space.

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Android
The freedom Android offers comes with increased risk,both to privacy, security, and the device’s overall health.
Avast One for Android is the all-in-one
solution to protect from Android threats
with file and app shields, a powerful
VPN, data breach monitoring, junkcleaning, app hibernation, and more. It
covers all aspects of the smartphonethat are threatened every day.

Smart Scan
For over a decade, Smart Scan has been the most used andloved feature of Avast Mobile Security. The next-generation
Smart Scan now covers even more areas of Android, junkcleaning, and performance issues.

Dashboard
The enhanced dashboard includes tailored
recommendations and critical messages.

Quick Actions
Scroll down to find 1-click-actions to quickly enable VPN,
clean up the Android, or start a deep scan. Over time,
Avast will add more quick actions and allow each user tocustomize their own.

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Protection | Avast One Essential (FREE)
Threats lurk in all files and apps downloaded, even in some cases from the official Play Store, and especially once ventured outside to download
unofficial APKs or files like PDFs. The lightweight protection engine runs silently on each phone and helps protect from mobile threats.
File Shield

Web Shield

Wi-Fi Shield (Manual Scan)

Scan Center (Manual Scan)

File Shield proactively scans any file added to or opened onAndroids. It actively scans for threats within all apps before
they are opened. If malware is detected, File Shield allows
the user to ignore or remove it.

Detects when the user visits a malicious site, for example
a phishing site or a site containing malware, and gives awarning. In addition, it recommends turning on the VPN whena sensitive website such as a shopping or online banking site
is opened.

In the age of connected devices, Avast Wi-Fi Scan
provides protection for the smart home by identifying
weak passwords, vulnerable routers, compromised internet
connections, and enabled, but not protected IPv6. By listing
all the devices on the network, users are notified by new
devices joining the watched network so users can make surethat only trusted devices are connected. If an issue is found,
Avast offers solutions for how to fix it to keep users safe on
both public and private networks.

Scan Center runs a scan for all sorts of Android malware —from top to bottom. Avast’s targeted scan lets the user scan
specific sections of the phone or SD cards.

App Shield
Avast One for Android checks thousands of apps fromaround the world, using both static and dynamic analysis
to detect and protect users from malicious applications.
The static analysis checks the source code of programs formalicious features, while the dynamic analysis runs malware
in a sandbox to observe its behavior to determine if a
program is innocent or malicious.

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Protection | Avast One Individual/Family (PAID)
Scan Center and Wi-Fi Scans (Automatic)
The premium version of Avast One for Android lets the userschedule scans for malware and vulnerable Wi-Fi networks
automatically, taking away all the worry of malware infections
on the phone.

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Privacy - VPN | Avast One Essential (FREE)
Avast One for Android is going the extra mile protecting users’ privacy with a full-blown VPN and Data Leak Monitoring.
VPN traffic

256-bit Advanced Encryption

Location masking

Single shared IP

The VPN allows users to establish a secure connection with a
5GB/week traffic limit, a unique offering even in competitive
VPN products. In Essential, users cannot choose their desired
location to connect to.

Once the VPN is enabled, all traffic from the user to theserver is being encrypted using AES 256 encryption, making
it virtually uncrackable. It’s the same encryption standard
used by banks, credit card companies and governments toprotect their data.

An IP address is one of the main ways advertisers, internet
service providers and others keep track of users across theweb. It can also reveal a user’s real-world location. Avast
servers act as a mask that provides a new IP address, so thegeographic location and thus the user's identity stays hidden.

Whenever connected to one of the Avast servers, the same
IP address is revealed as others connected to it — making
it that much harder for the traffic on that server to be
associated with anyone. Sharing ones IP address with otherpeople also makes it harder to profile their online behavior.

Optimal Location
Avast One’s built-in VPN includes a handy Optimal Location
setting. Once the user switches on the VPN, there’s nothingelse to set up: Avast VPN algorithms take into consideration
server proximity to ensure the best performance, no matter
where the user is — automatically.

Infrastructure load balancing
All of the Avast VPN gateways run on dedicated hardware
servers with enough excess capacity to maintainperformance even under peak loads. Avast runs smart
systems on top that automatically balance traffic acrossdifferent servers to make sure none of them get overloaded,
and all of them operate smoothly.

DNS leaks protection

Sensitive Content Detection

DNS leaks could reveal a user’s IP address by accidentally
revealing the address to the ISP. A DNS leak refers to asecurity flaw that allows DNS requests to be revealed to ISP
DNS servers, despite the use of a VPN service to attempt toconceal them. In such a case an ISP or other entities can see
the apps used and the website a user visits.

When enabled, Avast will warn users if they try to accesssensitive sites such as online banking, or sites with sensitive
content, without proper encryption. It then suggests turning
on a VPN connection.

Avast’s extra layer makes sure that all DNS requests are
encrypted again on top. DNS requests are encrypted by
Avast and sent to Avast secure DNS servers to protect users
from possible DNS leaks that could reveal a real IP address.
This ensures user privacy from an ISP and any other on-patheavesdropper.

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Privacy | Avast One Essential (FREE)
Data Breach Monitoring (Limited)
Data Breach Monitoring enables a user to find out if theiraccounts have been compromised due to a data breach. As afree and paid user, they can scan data lists of data breaches tosee if the passwords of their online accounts have been exposed.

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Privacy | Avast One Individual/Family (PAID)
Data Breach Monitoring
In the paid version, each user can set up monitoring toautomatically receive breach alerts when the password to an
online account has been compromised in a data breach, helping
secure those accounts by changing their passwords. People can
automatically monitor five (Individual) or ten (Family) emails via
the Data Breach Monitoring feature to observe whether they
have been compromised in a data leak.

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Performance | Avast One Essential (FREE)
Junk Cleaner (Manual)
Junk Cleaner scans each Android phone for unnecessary
junk files, such as hidden caches, abandoned APK files, log
data, and more. None of this data is needed anymore, but
gets created by the system on a regular basis.

App Hibernation
Detects background apps that slow down a phone and drain
its battery life —and lets the user turn them off with one tap.
By disabling apps their processes will temporarily stop andcan not drain your phone anymore. However, when they arelaunched manually, they will start and work fine.

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Performance | Avast One Individual/Family (PAID)
Junk Cleaner & App Hibernation(automatic)
Performs both junk cleans and hibernates apps (see above)
fully automatically or on a regular schedule that you can set.

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iOSIntroduction

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iOS | Avast One Essential (FREE)
Despite Apple locking down its iOS, there are plenty of threats waiting for users when browsing the web.
Avast One for iOS app gives users a Web Shield, a fully-featured VPN solution, and Data Leak Monitoring in one package.
Web Shield
Detects when the user visits a malicious site, for example aphishing site or a site containing malware, and gives a warning.
In addition, it recommends turning on the VPN when asensitive website is opened, such as a shopping or banking site.

Data Breach Monitoring (Limited)
Data Breach Monitoring enables a user to find out if theiraccounts have been compromised due to a data breach.
As a free and paid user, they can scan data lists of data
breaches to see if the passwords of their online accounts
have been exposed. In addition, Avast One gives users
plenty of recommendations.

Photo Vault
Allows users to put photos in a safe and protected place
inside the Avast One app.
These photos can be protected with a passcode so that noone — even with access to the phone can open them.

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iOS | Avast One Essential (FREE)
Built-in VPN
The VPN allows users to establish a secure connection with a
5GB/week traffic limit, a unique offering even in competitive
VPN products. In Essential, users cannot choose their desired
location to connect to. More information on how the
VPN works can be found on page 43.

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iOS | Avast One Individual/Family (PAID)No VPN limit
In Avast One, users have no traffic limit for their VPN, so they
can browse privately.

Data Leak Monitoring
Each user can set up monitoring to receive breach alerts when
the password to an online account has been compromised in adata breach, helping them secure those accounts by changing
their passwords. It supports five emails per account.

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Resources
Avast One for Windows (Essentials & Premium)Avast One Android (Essentials & Premium) Product download URL

 Product download URL

 Screenshots

 Screenshots Box Shot Box Shot Pricing Pricing

Customer support options

Customer support options

Avast One for Mac (Essentials & Premium)Avast One for iOS (Essentials & Premium) Product download URL

 Product download URL

 Screenshots

 Screenshots Box Shot Box Shot Pricing Pricing

Customer support options

Up-to-date pricing and promotions
can be found on the Avast website.

Avast One Reviewer's Guide 52

...now let’s reset your internet relationshipPrivacy Policy

As one of the world’s most trusted antivirus software companies, we aim to defend ourusers against threats in cyberspace. To do so, we may have to collect personal data toprovide our users with the best weapons and the most up-to-date security.
We have technical product experts who can quickly get in touch to help you throughany of your product testing scenarios or questions. All other trademarks are theproperty of their respective owners.

Avast PR & Technical | Contact Information
If you are a member of the press, please contact PR@avast.com if you have any
questions regarding Avast or any of its products. Media materials can be found athttps://press.avast.com.
We do not take this trust for granted so we’ve developed a Privacy Policy that covers
how we collect, use, disclose, transfer, and store your personal data. Our full privacy
policy, which includes why and how we process data, and how we disclose andprotect our users personal data, can be found here.

| Reviewer's Guide 54