cyber security incident response plan template

Enterprise Cybersecurity Incident Response Framework

Document Control

• Document ID: [__________]
• Version: [__________]
• Effective Date: [__________]
• Review Cycle: [Annual/Bi-Annual]

1. Purpose & Scope

The purpose of this document is to establish a standardized methodology for detecting, containing, and remediating security threats within [Company Name]. This policy applies to all information systems, network infrastructure, and data assets owned or managed by [Company Name].

2. Prerequisites

Before initiation, ensure the following are accessible:

• Communication Channels: [Slack/Teams/Encrypted Signal Group]
• Access Credentials: [Privileged Admin/Root Credentials stored in Vault]
• Documentation Tools: [Incident Log/Centralized Ticketing System]
• Evidence Storage: [Secure Forensic Repository/ReadOnly S3 Bucket]
• Legal/Compliance Contact: [Legal Counsel Name/Firm]

3. Roles & Responsibilities (RACI)

4. Step-by-Step Procedure

Phase 1: Identification & Triage

• Verify the validity of the security alert.
• Determine the scope of the affected systems.
• Assign an Incident Severity Level: [Low/Medium/High/Critical].
• Notify the Incident Commander via [Primary Contact Method].

Phase 2: Containment

• Implement short-term containment: [e.g., isolate VLAN, disable compromised credentials].
• Capture volatile memory and system logs for forensic analysis.
• Implement long-term containment: [e.g., patch vulnerabilities, re-image systems].

Phase 3: Eradication

• Identify and eliminate the root cause of the incident.
• Remove malicious artifacts, backdoors, or unauthorized accounts.
• Verify system integrity against [Known Good Baseline].

Phase 4: Recovery

• Restore services from [Verified Clean Backup].
• Monitor systems for abnormal activity for [Number] hours/days.
• Gradually restore user access permissions.

Phase 5: Post-Incident Activity

• Conduct a "Lessons Learned" meeting within [Number] business days.
• Document final incident details in [Incident Report Database].
• Update security controls to prevent recurrence.

5. Quality Assurance, Pro-Tips, & Pitfalls

• Quality Assurance: Ensure all logs are timestamped and cryptographically signed to maintain chain of custody.
• Pro-Tip: Pre-configure an "Out-of-Band" communication channel to maintain contact if the primary corporate network is compromised.
• Common Pitfall: Failing to document actions in real-time. If it isn't recorded, it didn't happen in the eyes of an auditor.
• Common Pitfall: Over-communicating with non-essential stakeholders during the containment phase.

6. FAQs

Q: How do I determine the severity of an incident? A: Use the impact matrix: High severity involves PII/PHI exposure or total service outage. Medium involves localized disruption. Low involves isolated, non-sensitive alerts.

Q: When should legal counsel be involved? A: Legal must be notified immediately if the incident involves regulatory data (GDPR, HIPAA, CCPA) or potential criminal activity requiring law enforcement intervention.

Q: What is the primary goal of the containment phase? A: The goal is to stop the bleeding; prevent further data exfiltration or lateral movement without destroying evidence needed for root cause analysis.