Detection Engineering 2026: 100 SIEM Use Cases, ATT&CK v19.2 Mapping, Tuning, Response & Validation Kit

This kit is a condensed, practical detection-engineering library covering 100 priority use cases across 20 detection domains, ordered along the attack path. Every rule is written as portable logic (WHEN, GROUP BY, WINDOW, THEN) and mapped to MITRE ATT&CK v19.2. It supports ISO/IEC 27001:2022 logging, monitoring and incident-management controls, and ISO/IEC 27035 incident-handling practice.

What is inside:

How to read the library: the 100 use cases (51 Critical, 46 High, 3 Medium), and how to trace a rule from technique to strategy, analytic, data component and your own log source.

Standard playbook

tuning controls T1–T3 investigation steps I-1 to I-7 careful versus fast containment stances five safe-validation outcomes readiness gate R-1 to R-6 20 detection domains, 5 rules each: exposure, web and application, and email identity, SaaS/M365 and Active Directory/Kerberos endpoint execution, persistence and credential access lateral movement, defence impairment and network/C2 cloud IaaS, containers/Kubernetes and CI/CD exfiltration, ransomware and IOC attack chains and detection health Each rule shows its condition, ATT&CK technique, window and severity. Response families and attack chains: 10 response families with post-confirmation actions, plus five multi-stage chains (phishing to sign-in, credential access to privileged login, EDR impairment to lateral movement, archive to upload, ransomware pre-impact). Reference pages: telemetry map, window and severity profile, safe validation tests, tuning patterns, roll-out roadmap and 12 key takeaways.

Who it is for: SOC analysts, detection engineers, threat hunters, incident responders, SIEM and EDR engineers, security architects and security managers.

How to use it: use it as a rule catalogue, a SIEM roll-out plan, a tuning and validation guide, a coverage-gap review and a SOC training reference. It helps teams build detections with an owner, proven telemetry, safe tests and a clear response, so alerts can be trusted when it matters.