Cybersecurity Incident Response Plan Example PDF

Standard Operating Procedure: Cybersecurity Incident Response Plan (CIRP)

Template Registry Engineering & Architecture

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1. Document Control Block

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2. Executive Summary & Purpose

This Standard Operating Procedure (SOP) defines the institutional framework and precise execution protocols for identifying, containing, eradicating, and recovering from cybersecurity incidents across Template Registry production infrastructure, CI/CD pipelines, and corporate environments. The purpose of this document is to minimize dwell time, preserve evidentiary integrity, ensure regulatory compliance, and guarantee system availability through clinical, deterministic incident response methodologies.

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3. Scope & Prerequisites

3.1 Scope

This policy applies to all systems, cloud environments (AWS/GCP), container registries, source code repositories, databases, and endpoint devices owned, operated, or managed by Template Registry personnel, contractors, and third-party vendors.

3.2 Required Tools & Software Access

• SIEM / Log Aggregation: Datadog / OpenSearch (Read/Write access for IR team)
• Endpoint Detection & Response (EDR): CrowdStrike Falcon (Containment-tier privileges)
• Cloud Infrastructure Access: AWS IAM Admin / GCP Super-Admin (via Break-Glass MFA)
• Forensic Acquisition: Volatility, LiME, Autopsy, or cloud-native snapshot tools
• Secure Communication: Signal / OOB PagerDuty escalation matrix

3.3 Prerequisites

• Active participation in bi-annual Incident Response tabletop simulations.
• Verified credentials within the Break-Glass hardware token vault.
• Read access to the current network topology and data-flow diagrams.

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4. Roles & Responsibilities (RACI Matrix)

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5. Step-by-Step Procedure

Phase 1: Preparation & Detection

• Monitor automated SIEM alerts, anomaly detections, and third-party vulnerability disclosures.
• Validate alert fidelity to filter false positives via baseline traffic heuristics.
• Declare an official incident if indicators of compromise (IoCs) or unauthorized access vectors are confirmed.
• Initialize the immutable incident ledger (s3://template-registry-audit-logs/incidents/[INC-ID]/).

Phase 2: Identification & Scope Assessment

• Assign an Incident Commander (IC) to direct operational triage.
• Isolate anomalous network nodes or compromised containers via EDR or cloud security group lockdown without destroying volatile memory.
• Enumerate the blast radius: identify affected databases, credential stores, and source code repositories.
• Classify the incident severity level (Sev-1: Catastrophic/Data Exfiltration; Sev-2: Major Containment Required; Sev-3: Minor/Isolated).

Phase 3: Containment (Short-Term & Long-Term)

• Short-Term Containment: Revoke all active sessions and rotate API keys for compromised IAM roles.
• Apply emergency network micro-segmentation rules to block command-and-control (C2) callback IPs.
• Long-Term Containment: Patch underlying vulnerabilities, rebuild container base images from verified immutable golden manifests, and re-provision compromised hosts.

Phase 4: Eradication & Forensic Preservation

• Capture forensic memory dumps and disk snapshots of tainted instances prior to termination.
• Scan secondary systems for persistence mechanisms (cron jobs, unauthorized SSH keys, backdoored binaries).
• Remove malicious payloads, unauthorized accounts, and exploit artifacts from production environments.
• Verify cryptographic checksums of all core binaries against clean baseline artifacts stored in the Template Registry artifact store.

Phase 5: Recovery & System Restoration

• Restore services systematically, beginning with foundational data layers up to edge API gateways.
• Validate data integrity and state consistency using automated transactional verification scripts.
• Enable hyper-vigilant logging and real-time behavioral monitoring on restored assets for a minimum of 14 days.
• Formally declare system stability and operational handoff back to standard engineering rotations.

Phase 6: Post-Incident Review (PIR) & Lessons Learned

• Conduct a blameless post-mortem meeting within 72 hours of incident closure.
• Draft the definitive root cause analysis (RCA) report and archive it in the institutional audit repository.
• Update detection rules, IAM policies, and infrastructural hardening templates to prevent regression.

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6. Quality Assurance & Pro-Tips

6.1 Best Practices

• Preserve Evidence First: Never power down a live compromised host before memory acquisition unless active lateral movement threatens core data sanctuaries.
• Out-of-Band Communication: Assume corporate Slack/Teams is compromised during advanced persistent threat (APT) scenarios; utilize encrypted out-of-band channels.

6.2 Common Pitfalls

• Premature Remediation: Eradicating malware before capturing forensic snapshots destroys critical attribution evidence.
• Information Silos: Failing to notify Legal early can breach regulatory disclosure timelines (e.g., GDPR, CCPA).

6.3 Metric Thresholds

• Mean Time to Detect (MTTD): $\le 15 \text{ minutes}$
• Mean Time to Contain (MTTC): $\le 30 \text{ minutes}$
• Evidence Preservation Latency: $\le 10 \text{ minutes}$ from containment trigger

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7. Frequently Asked Questions

Q1: At what point should an internal security anomaly be escalated to a Sev-1 incident requiring external legal and PR notification?
A: Escalation to Sev-1 is mandatory the moment telemetry confirms unauthorized exfiltration of Personally Identifiable Information (PII), proprietary source code, or administrative credential compromise affecting production environments.

Q2: How should engineering teams handle system logs to ensure admissibility in legal or forensic investigations?
A: All logs must be streamed in real-time to a Write-Once-Read-Many (WORM) storage bucket with cryptographic hashing enabled. Direct local log modification on compromised instances must be treated as a critical indicator of anti-forensic activity.

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Approved by:
Julian Vance
Chief Architect, Template Registry