The Necessity of Active Testing – Detection Edition

This blog post discusses the importance of detection engineering and active testing (purple teaming) to ensure security detections and logging function as intended. It outlines common issues—improper tuning and baselining, tool-focused rather than technique-based detections, overreliance on EDR, and misconfigured audit/SACL settings or SIEM parsing—and advocates for coordinated red/blue testing or third-party purple team exercises to uncover and remediate gaps in telemetry and detection logic.