Module 20 · Purple Team — Operationalising Adversary Emulation

Manish Garg
Manish Garg Associate of (ISC)² · RingSafe
May 14, 2026
3 min read
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Why this module exists. Purple team — red and blue working together to validate and improve defences — is what closes the loop between offensive testing and defensive engineering. This module covers the purple-team operating model and how it differs from traditional red-team engagements.

Red vs purple — what differs

Red team Purple team
Adversary emulation, blue blind Adversary emulation, blue collaborating
Goal: demonstrate impact Goal: improve detection
Output: detailed report; blue may not see techniques used Output: detection rules + visibility-gap remediation
Annual or quarterly engagement Continuous or monthly cadence
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