Analysis · curated 23 Sep 2026
Message To Communicate — Threat Modeling our A2A Workflows
First reported medium.com
Coverage timeline
Single-source analysis — first reported, latest, and curated coincide.
Why it matters
A2A protocol workflows between cross-cloud agents introduce new trust and authentication boundaries, and applying frameworks like MAESTRO and MITRE ATLAS to model those risks helps defenders reason about agentic attack surfaces.
Mary Becken's Medium article walks through threat modeling of Agent-to-Agent (A2A) communications between a Microsoft Foundry agent and an AWS Bedrock AgentCore agent, applying the MAESTRO framework and referencing MITRE ATLAS. The piece documents authenticating via a Foundry managed identity and links to threat-model docs in the author's GitHub repo.