ICYMI: June 2026 @AWS Security

July 15, 2026 · AWS Security · Severity: MEDIUM

In June 2026, AWS introduced several security enhancements and resources to bolster cloud security and compliance. Key updates included advanced identity and access management features, such as using Amazon Bedrock AgentCore resource-based policies to secure multi-tenant AI platforms and restrict cross-account access. Amazon Cognito also unveiled next-generation infrastructure improvements, including high-throughput performance, customer-managed encryption keys, and multi-Region replication for business continuity. Additionally, AWS Shield Advanced introduced attack flow logs for better visibility into DDoS events, enabling organizations to pinpoint sources and verify mitigations. These updates aim to help organizations secure their cloud environments, prevent data exfiltration, and manage large-scale migrations effectively. AWS also addressed emerging threats, such as subdomain takeovers, by leveraging AWS Config custom rules to detect dangling DNS records. The company introduced layered egress controls using AWS Network Firewall and Amazon Route 53 Resolver DNS Firewall to reduce unauthorized data transfer risks. Furthermore, AWS Continuum, an AI-native platform, was launched to streamline the lifecycle of code vulnerabilities, from discovery to remediation. These advancements, coupled with tools like Kiro CLI for security investigations and updates to the Threat Technique Catalog, provide organizations with robust frameworks to enhance their security posture. These updates are critical for businesses leveraging AWS services to protect against evolving cyber threats and ensure compliance with security best practices.

Read all about the latest AWS security features, compliance updates, and hands-on resources in our new, monthly digest posts. You’ll find expert blog posts, new service capabilities, code samples, and workshops.

AWS Security Blog posts

This month’s AWS Security Blog posts covered identity and access management, threat intelligence, network security, AI-powered security tooling, and multi-account governance. Read on for guidance on restricting console access to expected networks, securing multi-tenant AI agents, preventing data exfiltration, and managing organization-scale migrations.

Identity

Secure multi-tenant AI agents with Amazon Bedrock AgentCore resource-based policies
Authors: Satyen Verma, Satveer Khurpa, Prajit Pabbati, Vijay Kumar Samanthapudi, Zohreh Norouzi | Published: June 2, 2026
Learn to use resource-based policies on Amazon Bedrock AgentCore to grant cross-account access for one tenant while restricting another to VPC-only traffic in a shared multi-tenant AI platform.

Customize federated sign-in with new Amazon Cognito Lambda trigger
Authors: Abrom Douglas | Published: June 4, 2026
Learn to use the new inbound federation AWS Lambda trigger for Amazon Cognito to transform, filter, and enrich user attributes from external identity providers before profile creation in your user pool.

Amazon Cognito unlocks advanced capabilities with next-generation infrastructure
Authors: Howie Li, Georgi Baghdasaryan | Published: June 4, 2026
Amazon Cognito introduced high-throughput performance, customer-managed keys for data encryption at rest, and multi-Region replication for business continuity, built on a new storage infrastructure migrated with zero downtime.

Building secure B2C applications with fine-grained access control using Amazon Cognito and Amazon Verified Permissions
Authors: Sowmya Vemuri | Published: June 5, 2026
Learn to build fine-grained access controls for a Streamlit application using Amazon Cognito for authentication and Amazon Verified Permissions with Cedar policies for authorization.

Restrict AWS Management Console access to expected networks with sign-in resource-based policies and RCPs
Authors: Swara Gandhi, Rishi Tripathy | Published: June 24, 2026
Learn to use sign-in resource-based policies and resource control policies to restrict AWS Management Console sign-in to requests from expected networks, such as corporate VPNs and Amazon VPC endpoints.

Infrastructure security

Gain visibility into DDoS attacks with flow logs in AWS Shield Advanced
Authors: Ken Kitts | Published: June 4, 2026
Learn to configure AWS Shield Advanced attack flow logs to capture traffic metadata during DDoS events, pinpoint sources, verify mitigations, and feed your existing analysis pipelines.

Threat tactic spotlight: Subdomain takeover
Authors: Matt Gurr, Ariam Michael, Geoff Sweet, Luis Pastor | Published: June 16, 2026
Learn to detect and prevent subdomain takeover using AWS Config custom rules to identify dangling DNS CNAME records pointing to deleted resources in globally shared namespaces

Prevent data exfiltration: AWS egress controls for cloud workloads
Authors: Meriem Smache, Maxim Raya | Published: June 22, 2026
Learn to implement layered egress detection and protection using AWS Network Firewall, Amazon Route 53 Resolver DNS Firewall, and data perimeters to help reduce unauthorized data transfer risk.

Detection and incident response

Operationalizing AWS security: A maturity roadmap
Authors: Joseph Sadler | Published: June 8, 2026
A six-phase maturity roadmap for organizations that have already enabled AWS Security Hub and Amazon GuardDuty, covering tuning, notifications, automated remediation, and operational cadence.

Introducing AWS Continuum: Security at machine speed
Authors: Chet Kapoor | Published: June 17, 2026
AWS Continuum for code vulnerabilities is an AI-native platform that addresses the full lifecycle of a code vulnerability at machine speed—from discovery and prioritization through validation and remediation.

Accelerate security investigations with Kiro CLI
Authors: Sibasankar Behera, Marshall Jones | Published: June 18, 2026
Learn to use Kiro CLI to conduct security investigations following the AWS Security Incident Response Guide framework, from triaging Amazon GuardDuty findings through containment and evidence preservation.

What the June 2026 Threat Technique Catalog update means for your AWS environment
Authors: Shannon Brazil, Cydney Stude, Javier Teitelbaum | Published: June 29, 2026
Learn about five new entries and three updates to the Threat Technique Catalog for AWS, covering container security, organization-level trust, and compute hijacking patterns observed by AWS CIRT.

Key Takeaways

AWS Security's June 2026 digest covers new security features and compliance updates.
Expert blog posts, code samples, and workshops provide hands-on security resources.
Monthly digests help users stay informed on AWS security enhancements and best practices.