H3XAOperational intelligence
Live analytical pictureEvidence before assessment
TypeTechnique
External ID—
First seen2026-08-14
Last seen2026-08-14

Confidence

—

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.

19 recorded

Relationships

mitigates
from Audit
Mitigation
mitigatesMitigation
mitigatesMitigation
mitigatesMitigation
mitigatesMitigation
usesCampaign
usesTool
uses
from APT42
Group
uses
from C0027
Campaign
usesGroup
uses
from HAFNIUM
Group
uses
from Pacu
Tool
usesTool
usesGroup
usesGroup
usesGroup
usesTool
8 external

References

mitre-attack
T1530
open
Amazon S3 Security, 2019
https://aws.amazon.com/premiumsupport/knowledge-center/secure-s3-resources/
open
Microsoft Azure Storage Security, 2019
https://docs.microsoft.com/en-us/azure/storage/common/storage-security-guide
open
Wired Magecart S3 Buckets, 2019
https://www.wired.com/story/magecart-amazon-cloud-hacks/
open
Google Cloud Storage Best Practices, 2019
https://cloud.google.com/storage/docs/best-practices
open
HIPAA Journal S3 Breach, 2017
https://www.hipaajournal.com/47gb-medical-records-unsecured-amazon-s3-bucket/
open
Rclone-mega-extortion_05_2021
https://redcanary.com/blog/rclone-mega-extortion/
open
Trend Micro S3 Exposed PII, 2017
https://www.trendmicro.com/vinfo/us/security/news/virtualization-and-cloud/a-misconfigured-amazon-s3-exposed-almost-50-thousand-pii-in-australia
open