Reactive Incident Response

Reactive Incident Response is a cybersecurity methodology focused on detecting, analyzing, and mitigating security incidents after they have occurred. It involves structured processes for identifying breaches, containing damage, eradicating threats, and recovering systems to normal operations. This approach contrasts with proactive security measures, dealing with actual security events rather than preventing them.

Also known as: Incident Response, IR, Security Incident Response, Post-Incident Response, Reactive Security Response

Why learn Reactive Incident Response?

Developers should learn Reactive Incident Response when working in security-sensitive roles or environments where data breaches, malware infections, or system compromises are risks. It's essential for incident response teams, security operations centers (SOCs), and DevOps engineers handling production systems to minimize downtime and data loss. Use cases include responding to ransomware attacks, data leaks, unauthorized access, and other security breaches in real-time.

Learning Resources

• docs: NIST Computer Security Incident Handling Guide
• course: SANS Incident Response Training
• docs: CIS Critical Security Controls - Incident Response
• tutorial: Incident Response Tutorial by Cybrary
• book: The Practice of Network Security Monitoring