Insecure Inter-Agent Communication: When Agents Talk, Attackers Listen (ASI07)

Wed, 15 Jul 2026 07:06:00 +0300

This is post #7 of the OWASP Agentic AI Top 10: What Builders on AWS Need to Know series.

You’ve built a multi-agent system. I’ve built multi-agent systems. Agent A handles customer requests. Agent B processes payments. Agent C manages inventory. They talk to each other over internal APIs, passing context, delegating tasks, sharing results.

Now ask yourself: when Agent A tells Agent B “process a refund for $500 to account X,” how does Agent B know that instruction actually came from Agent A? And how does it know Agent A wasn’t compromised 30 seconds ago?

Eventbridge on Technodrone

Insecure Inter-Agent Communication: When Agents Talk, Attackers Listen (ASI07)