AWS Bedrock Resource-Based Policy Modified or Deleted

Detects modification or deletion of resource-based access policies on AWS Bedrock resources via the PutResourcePolicy and DeleteResourcePolicy API calls. Resource-based policies govern which principals (including external accounts) may access Bedrock resources such as agents, knowledge bases, and custom models. An adversary may attach a resource policy granting an external or unexpected principal access to a Bedrock resource to establish persistence or enable cross-account access, or may delete an existing policy to weaken access controls. These changes should be validated for principal ownership and least-privilege intent.

ATT&CK coverage

Persistence

T1098Account ManipulationAlso under Privilege Escalation.230 detections cover this technique

Detection requirements

Log source category: event_index

Detection logic

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Detection catalogue

ATT&CK coverage

Detection requirements

Detection logic