Cybersecurity — Incident Response

Incident response phases

1. Preparation: Plans and tools
2. Detection: Identify incidents
3. Containment: Limit damage
4. Eradication: Remove threat
5. Recovery: Restore systems
6. Lessons learned: Improve

Response plan

incident_response = {
    'detection': [
        'Monitor SIEM alerts',
        'Review logs',
        'User reports'
    ],
    'containment': [
        'Isolate affected systems',
        'Block malicious IPs',
        'Change credentials'
    ],
    'eradication': [
        'Remove malware',
        'Patch vulnerabilities',
        'Restore from backup'
    ],
    'recovery': [
        'Verify system integrity',
        'Monitor for recurrence',
        'Resume operations'
    ]
}

Documentation

incident_report = {
    'incident_id': 'INC-001',
    'date': '2024-01-01',
    'severity': 'High',
    'description': 'Ransomware attack',
    'affected_systems': ['server1', 'server2'],
    'actions_taken': [],
    'status': 'Open'
}

Communication

1. Internal notification
2. Legal notification
3. Customer notification
4. Regulatory notification

Best practices

1. Test response plans
2. Train team regularly
3. Maintain documentation
4. Learn from incidents

Mini Practice

1. Create incident response plan
2. Run tabletop exercise
3. Document incident
4. Conduct post-mortem

Up Next

Continue with Digital Forensics - Investigation.