Training Video | Security Incident Response

Security incident response is the plan you follow after a breach, so the aftermath is handled calmly and deliberately instead of improvised under pressure.

Key concepts

• Decide in advance who leads, who communicates, and who has authority to take systems offline. Roles chosen in the middle of an incident are rarely the right ones.
• Detect and contain first. Stopping the spread matters more than immediately understanding every detail of what happened. Full analysis can follow once the bleeding stops.
• Preserve evidence while you work. Rushed cleanup often destroys the logs that would explain the cause. You may then be unable to prove what was taken.
• Eradicate the root cause, then recover from known-good backups. Restoring onto a still-compromised system simply repeats the incident a few days later.
• Hold a blameless review afterward. Every incident should leave behind at least one concrete, assigned improvement. Blame buys silence, and silence hides the next problem.

Why it matters for your business

The worst time to design a response process is during an incident, when people are exhausted and stakeholders want answers immediately. A short plan that has been rehearsed beats a long one nobody has read. Continuous detection also shortens the clock, which is part of what managed cybersecurity services provide.