2026-06-06 · aws-security
AWS published a new security post on June 2, 2026 covering how to secure multi-tenant AI agents with Amazon Bedrock AgentCore resource-based policies. The update focuses on isolating tenants, enforcing policy boundaries, and keeping sensitive traffic inside the right security perimeter.
AWS introduced guidance for using resource-based policies with Bedrock AgentCore so SaaS providers can control who can invoke shared agent infrastructure. The post emphasizes tenant isolation, private VPC routing, ABAC-style controls, and policy evaluation before tool access is granted.
When agent systems share infrastructure without strong isolation, a tenant mistake can turn into cross-account exposure, unauthorized access, or noisy-neighbor leakage. That kind of failure is expensive because it can compromise both live requests and the integrity of the surrounding data and control plane.
Cold storage does not replace live policy controls, but it reduces the blast radius for the most sensitive assets by keeping critical backups, keys, and recovery material offline. The same principle applies here: isolate high-value resources so a compromise in one runtime does not automatically expose everything else.
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