Speed is everything
Breaches are detected through monitoring, and the time to detect and respond determines the damage. A defined incident response process turns panic into a repeatable set of steps.
Detection
- Aggregate signals from logs, metrics, and alerts into one place.
- Correlate events to spot patterns a single signal would miss, such as many failed logins followed by a success.
- Baseline normal behavior so anomalies stand out.
The response lifecycle
- Identify confirms a real incident and its scope.
- Contain stops the spread, for example isolating a host or revoking credentials.
- Eradicate removes the attacker foothold and root cause.
- Recover restores service and verifies it is clean.
- Learn runs a blameless review to prevent recurrence.
Practice in advance
Run drills so the team knows roles and tools before a real incident. The first time you exercise the runbook should not be during a breach.
Key idea
Incident response follows identify, contain, eradicate, recover, and learn, backed by correlated detection and rehearsed drills so response is fast and calm.