Incident Response - 4.8
Summary
Incident response involves a structured process to handle security incidents, starting with preparation through policies and procedures, followed by detection of the issue through alerts, and analysis to determine its scope. The process continues with containment to prevent further damage, eradication of the threat, and recovery to restore systems. Finally, lessons learned are gathered to improve future responses, supported by ongoing training and preparation.
Notes:
Process
- Preparation: Policies, procedures, and steps taken before an incident occurs to ensure readiness and a clear plan of action.
- Detection: Alerts and signs that an incident has occurred, such as IDS (Intrusion Detection Systems), unusual traffic patterns, missing logs, or other indicators. The issue is identified.
- Analysis: Reviewing logs, alerts, and data to better understand the nature of the incident and determine the impact and scope.
- Containment: Isolating malware or other threats to prevent further spread or damage. Techniques like sandboxing can be used to analyze malicious software in a controlled environment.
- Eradication: Removing or correcting the root cause of the incident, such as eliminating malware, applying patches, or addressing vulnerabilities.
- Recovery: Restoring systems to a known, clean, and functional state, ensuring they are safe to use again.
- Lessons Learned: Post-incident reflection to assess the response, identify what went well and what can be improved, and make recommendations for improving future incident response efforts.
Training
- Training and Preparation: Ongoing training and preparation are critical to ensure the company is ready to respond to incidents effectively. Without adequate preparation, recovery after an incident can be slow and ineffective.