AWS Security Blog
Category: Advanced (300)
Help defend against memory poisoning in Amazon Bedrock AgentCore with multi-layer write validation
Amazon Bedrock AgentCore Memory helps AI agents maintain context across sessions through persistent short-term and long-term memory. Because memory content is automatically retrieved and injected into future conversations, the integrity of what gets written to memory directly shapes future agent behavior, which makes the write path a valuable control point to strengthen. AgentCore already provides […]
Simplify cross-partition access with AWS IAM outbound identity federation
You can now use tokens from AWS Identity and Access Management (IAM) outbound federation to assume roles in other Amazon Web Services (AWS) partitions. When your workloads run across AWS partitions such as Commercial, China, GovCloud (US), and European Sovereign Cloud, a workload in one partition might need to access resources or communicate with AWS […]
Beyond DKIM key rotation: understanding email replay attacks
As the email administrator for your organization’s domain, you receive a Domain-based Message Authentication, Reporting, and Conformance (DMARC) aggregate report showing email passing DomainKeys Identified Mail (DKIM) verification as though it came from your domain, sent from IP addresses you don’t recognize to recipients you didn’t contact. To clear the issue, you rotate your DKIM […]
Best practices for integrating IAM Roles Anywhere with your PKI
Using temporary credentials is a security best practice to reduce the risk from credentials getting compromised. With AWS IAM Roles Anywhere, now your workloads outside of Amazon Web Services (AWS) will be able to access AWS resources by obtaining temporary security credentials in AWS Identity and Access Management (IAM). IAM Roles Anywhere relies on public […]
Managing identity source transition for AWS IAM Identity Center
October 20, 2026: This post was republished to reflect the new migration capability from Active Directory to an external identity provider (IdP) or the Identity Center directory, now available in IAM Identity Center. September 2, 2026: This post was republished to include Active Directory migration strategies and automation for permission sets. AWS IAM Identity Center […]
GuardDuty Extended Threat Detection has added five new indicators to surface attack sequences
Amazon GuardDuty Extended Threat Detection correlates weak GuardDuty signals into a single, critical-severity attack sequence finding when their composition crosses a threshold of credibility. On May 20, 2026, the service started attaching five new indicator types to those sequences: MALICIOUS_PACKAGE, MISCONFIGURATION, REACHABILITY, SENSITIVE_DATA, and VULNERABILITY. For more information, see Document history for Amazon GuardDuty and […]
Configuring your AI vulnerability harness, Part 2: The steering file
This post shows you how to configure an AI model to perform structured, evidence-based vulnerability triage with the consistency of a seasoned security analyst. You’ll learn the design decisions behind five configuration sections that enforce structural verification, evidence-based scoring, and infrastructure-aware prioritization across every analysis session. Our companion post—Building your AI vulnerability harness—covered the architecture; […]
Improving SPIRE security and resiliency with AWS managed services
In cloud-centered environments, establishing trust between workloads is fundamental to securing machine-to-machine communication. Traditional approaches such as API keys, shared secrets, and static service account credentials weren’t designed for the scale and ephemeral nature of cloud workloads. This drives an organizational need to shift from long-term, static credentials to short-lived cryptographic workload identities. Organizations are […]
Identity-aware AI data agents with AWS Lake Formation and Trusted Identity Propagation
You’re building a data agent that lets business users ask questions about lakehouse data in natural language. You’ve already built governance policies that control who can access which datasets. The challenge is making the agent respect those rules without rebuilding them in your application code. When a user asks a question, the agent maps it […]
Transforming Bedrock Guardrails events into OCSF with CloudWatch
Security teams investigating possible AI-related security events need guardrail intervention data alongside their existing security telemetry. When a guardrail identifies or blocks a prompt injection attempt or redacts sensitive data, that intervention carries additional investigative value comparable to a failed sign-in or a network intrusion alert. AWS Bedrock publishes this telemetry to AWS CloudWatch metrics […]









