Question 1

What is incident response in cybersecurity?

Accepted Answer

Incident response (IR) is the organized approach to detecting, containing, and recovering from security breaches. It follows phases: preparation, identification, containment, eradication, recovery, and lessons learned. Effective IR minimizes damage, reduces recovery time, and lowers the cost of a breach.

Question 2

What are the most common security incidents?

Accepted Answer

The most common incidents are: ransomware attacks (encrypting files for payment), credential stuffing (using leaked passwords across sites), phishing with malware attachments, exposed secrets in source code (API keys on GitHub), web application attacks (SQL injection, XSS), and unauthorized cryptocurrency mining on cloud infrastructure.

Question 3

How do you prioritize actions during a security incident?

Accepted Answer

Follow the containment-first principle: stop the bleeding before investigating. Isolate compromised systems to prevent lateral movement, disable compromised accounts, block attacker IPs and C2 domains. Only then investigate scope and impact. Speed matters — the average ransomware encrypts a full network in under 45 minutes.

Incident Response

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