type: attack-pattern
spec_version: 2.1
id: attack-pattern--3298ce88-1628-43b1-87d9-0b5336b193d7
created: 2019-08-30T18:07:27.741Z
created_by_ref: identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5
revoked: no
external_references: source_name: mitre-attack
url: https://attack.mitre.org/techniques/T1530
external_id: T1530
source_name: Amazon S3 Security, 2019
description: Amazon. (2019, May 17). How can I secure the files in my Amazon S3 bucket?. Retrieved October 4, 2019.
url: https://aws.amazon.com/premiumsupport/knowledge-center/secure-s3-resources/
source_name: Microsoft Azure Storage Security, 2019
description: Amlekar, M., Brooks, C., Claman, L., et. al.. (2019, March 20). Azure Storage security guide. Retrieved October 4, 2019.
url: https://docs.microsoft.com/en-us/azure/storage/common/storage-security-guide
source_name: Wired Magecart S3 Buckets, 2019
description: Barrett, B.. (2019, July 11). Hack Brief: A Card-Skimming Hacker Group Hit 17K Domains—and Counting. Retrieved October 4, 2019.
url: https://www.wired.com/story/magecart-amazon-cloud-hacks/
source_name: Google Cloud Storage Best Practices, 2019
description: Google. (2019, September 16). Best practices for Cloud Storage. Retrieved October 4, 2019.
url: https://cloud.google.com/storage/docs/best-practices
source_name: HIPAA Journal S3 Breach, 2017
description: HIPAA Journal. (2017, October 11). 47GB of Medical Records and Test Results Found in Unsecured Amazon S3 Bucket. Retrieved October 4, 2019.
url: https://www.hipaajournal.com/47gb-medical-records-unsecured-amazon-s3-bucket/
source_name: Rclone-mega-extortion_05_2021
description: Justin Schoenfeld, Aaron Didier. (2021, May 4). Transferring leverage in a ransomware attack. Retrieved July 14, 2022.
url: https://redcanary.com/blog/rclone-mega-extortion/
source_name: Trend Micro S3 Exposed PII, 2017
description: Trend Micro. (2017, November 6). A Misconfigured Amazon S3 Exposed Almost 50 Thousand PII in Australia. Retrieved October 4, 2019.
url: https://www.trendmicro.com/vinfo/us/security/news/virtualization-and-cloud/a-misconfigured-amazon-s3-exposed-almost-50-thousand-pii-in-australia
object_marking_refs: marking-definition--fa42a846-8d90-4e51-bc29-71d5b4802168
modified: 2025-10-24T17:48:37.187Z
name: Data from Cloud Storage
description: Adversaries may access data from cloud storage.

Many IaaS providers offer solutions for online data object storage such as Amazon S3, Azure Storage, and Google Cloud Storage. Similarly, SaaS enterprise platforms such as Office 365 and Google Workspace provide cloud-based document storage to users through services such as OneDrive and Google Drive, while SaaS application providers such as Slack, Confluence, Salesforce, and Dropbox may provide cloud storage solutions as a peripheral or primary use case of their platform. 

In some cases, as with IaaS-based cloud storage, there exists no overarching application (such as SQL or Elasticsearch) with which to interact with the stored objects: instead, data from these solutions is retrieved directly though the [Cloud API](https://attack.mitre.org/techniques/T1059/009). In SaaS applications, adversaries may be able to collect this data directly from APIs or backend cloud storage objects, rather than through their front-end application or interface (i.e., [Data from Information Repositories](https://attack.mitre.org/techniques/T1213)). 

Adversaries may collect sensitive data from these cloud storage solutions. Providers typically offer security guides to help end users configure systems, though misconfigurations are a common problem.(Citation: Amazon S3 Security, 2019)(Citation: Microsoft Azure Storage Security, 2019)(Citation: Google Cloud Storage Best Practices, 2019) There have been numerous incidents where cloud storage has been improperly secured, typically by unintentionally allowing public access to unauthenticated users, overly-broad access by all users, or even access for any anonymous person outside the control of the Identity Access Management system without even needing basic user permissions.

This open access may expose various types of sensitive data, such as credit cards, personally identifiable information, or medical records.(Citation: Trend Micro S3 Exposed PII, 2017)(Citation: Wired Magecart S3 Buckets, 2019)(Citation: HIPAA Journal S3 Breach, 2017)(Citation: Rclone-mega-extortion_05_2021)

Adversaries may also obtain then abuse leaked credentials from source repositories, logs, or other means as a way to gain access to cloud storage objects.
kill_chain_phases: kill_chain_name: mitre-attack
phase_name: collection
x_mitre_attack_spec_version: 3.2.0
x_mitre_contributors: Netskope
Praetorian
AppOmni
Arun Seelagan, CISA
x_mitre_deprecated: no
x_mitre_domains: enterprise-attack
x_mitre_is_subtechnique: no
x_mitre_modified_by_ref: identity--c78cb6e5-0c4b-4611-8297-d1b8b55e40b5
x_mitre_platforms: IaaS
Office Suite
SaaS
x_mitre_version: 2.2