Amazon Event Bridge Security Guide: Best Practices for 2025 Architectures | Qualys
Summary: A Qualys blog post describes how attackers use reconnaissance against Amazon EventBridge by quietly mapping event flows before an exploit, exploiting unmonitored IAM roles, permissive event rules, and cross-account risks. It cites AWS figures that EventBridge can process over 2,000 events per second per account, and Coleman Parkes Research finding 85% of organizations consider event-driven architecture critical while only 13% have reached full maturity.
Bottom line: The same permissive rules and unmonitored IAM roles that let a single catch-all rule see all event traffic are what give an attacker a map of your cloud before they act, and with only 13% of organizations at full EDA maturity, most event flows are running ahead of their governance.
Read the original at Qualys Blog ↗
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