How to Create an Incident Response Plan for Server Breaches

How to Create an Incident Response Plan for Server Breaches

Having a documented incident response plan ensures you react quickly and methodically when your Breeze is compromised, minimizing damage and recovery time.

Phase 1: Preparation

• Maintain an up-to-date asset inventory of all services running on your Breeze.
• Keep offline backups and verify restoration procedures regularly.
• Document emergency contact information for your team and hosting provider.
• Set up centralized logging so evidence is preserved off-server.

Phase 2: Detection and Analysis

# Check for unauthorized access
sudo lastb | head -20
sudo journalctl -u sshd --since "24 hours ago" | grep "Accepted"

# Look for suspicious processes
ps auxf | grep -v "^\[" | less

# Check for modified system binaries
debsums -c 2>/dev/null

Phase 3: Containment

• Short-term: Isolate the Breeze by restricting network access via firewall rules.
• Long-term: Patch the vulnerability, rotate all credentials, and revoke compromised keys.

Phase 4: Eradication and Recovery

Remove malicious files, rebuild from clean backups if necessary, and redeploy with patched configurations. Verify integrity before restoring public access.

Phase 5: Post-Incident Review

Conduct a blameless post-mortem within 48 hours. Document what happened, how it was detected, the timeline of response actions, and concrete improvements to prevent recurrence. Update your incident response plan based on lessons learned.