Security Incident Management Key steps: Prepare: maintain an incident response plan with roles, communication trees, and escalation criteria. Detect and report: ensure monitoring, logging and clear internal reporting channels. Classify: use severity levels (critical, major, minor) and assign appropriate response teams.  Contain and eradicate: isolate affected systems and remove root causes. Recover: restore services from trusted backups and validate integrity. Post-incident: perform root-cause analysis, update risk registers, and publish lessons learned.