Unusual AI RAG Knowledge Base Modification

Synopsis

Field	Value
Activation Period	14 Days
Training Period	30 Days
Test Period	N/A (single event)
Deduplication Period	5 Days
Required Data	Requires one of the following data sources: AWS Audit Log OR Gcp Audit Log
Detection Modules	Cloud
Detector Tags	Cloud AI Infrastructure Analytics
ATT&CK Tactic	Impact (TA0040)
ATT&CK Technique	Data Manipulation: Stored Data Manipulation (T1565.001)
Severity	Low

Description

AI knowledge base was modified by an identity that typically doesn't interact with knowledge bases. MITRE ATLAS Technique: AML.T0070 - RAG Poisoning. OWASP Top 10 LLM Technique: LLM04 - Data and Model Poisoning.

Attacker's Goals

Contaminating knowledge base, so that contextual information will be incorrect, biased or harmful.

Investigative actions

• Check the identity that modified the knowledge base.
• Check recent additions to the knowledge base.