CyberGuard dictionary / Incident Response
Detection Engineering
Detection engineering is the design, testing, and maintenance of logic that identifies meaningful signs of suspicious activity in security data.
In simple terms
A detection is more than an alert rule: it needs useful data, a clear threat hypothesis, and a way to measure false alarms and missed activity.
Technical explanation
Engineers map behavior to data sources, write analytics, test against representative benign and malicious events, tune thresholds, document triage steps, and recheck coverage as systems change.
A detection should specify the behavior it targets, required telemetry, expected false positives, triage guidance, and a way to test it. Engineers revise rules as environments and attacker methods change.
Examples in practice
A team builds a rule for unusual service-account logins and tests it against approved automation before enabling alerts.
The team writes a rule for a service account signing in from an interactive desktop. It tests routine maintenance events and a controlled simulation before enabling the alert.
Why it matters
Well-tested detections help responders find activity earlier without overwhelming them with noise.
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Sources and further reading
- attack.mitre.orghttps://attack.mitre.org/detectionstrategies/↗
- csrc.nist.govhttps://csrc.nist.gov/pubs/sp/800/61/r3/final↗
Published 2026-10-15 · Last updated 2026-10-15 · CyberGuard editorial content. Source links provide context; they do not imply endorsement.