Module 18 · Detection Engineering — Sigma, ATT&CK Coverage, Validation

Manish Garg
Manish Garg Associate of (ISC)² · RingSafe
May 14, 2026
3 min read
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Why this module exists. Detection engineering — the systematic creation, tuning, and maintenance of SIEM/EDR detection rules — is what separates a noisy SOC from an effective one. This module covers Sigma rules, the MITRE ATT&CK mapping, the test-tune-deploy lifecycle, and the metrics that measure detection programme health.

What detection engineering is

  • Design rules that fire on adversary behaviour, not noise.
  • Test rules against historical data and red-team data.
  • Tune to acceptable signal-to-noise.
  • Deploy with documentation.
  • Maintain — update when adversary techniques evolve.
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