Full Report
A highly disruptive incident can feel overwhelming. New guidance provides a framework for response and recovery.
Analysis Summary
# Best Practices: Incident Response and Recovery
## Overview
These practices provide a structured framework for organizations to navigate the aftermath of a highly disruptive cyber attack. They address the transition from initial shock and chaos to technical recovery, business continuity, and long-term resilience.
## Key Recommendations
### Immediate Actions (Hours 0-72)
1. **Activate Defensive Measures:** Implement swift technical actions to contain the threat and prevent further lateral movement.
2. **Establish Governance:** Form a central command structure to coordinate actions across IT, legal, and leadership.
3. **Secure Professional Help:** Engage an NCSC-assured Cyber Incident Response (CIR) firm to provide technical expertise and objective reassurance.
4. **Control Communications:** Establish clear internal and external communication channels to manage stakeholder expectations and prevent misinformation.
### Short-term Improvements (1-3 months)
1. **Identify Minimum Viable Operations (MVO):** Prioritize the restoration of core business functions necessary to deliver essential services.
2. **Implement Workarounds:** Deploy temporary non-technical or alternative technical processes to maintain business continuity while systems are repaired.
3. **Perform Business-Led Recovery:** Ensure restoration sequences are driven by business impact rather than technical ease.
4. **Test Failover Systems:** Conduct live testing of backup and failover mechanisms to ensure they function under load.
### Long-term Strategy (3+ months)
1. **Address Root Causes:** Conduct a post-incident review to identify vulnerabilities that allowed the attack and remediate them.
2. **Secure Rebuilding:** Shift from "restoring" to "improving" by building systems that are easier to patch and configure by design.
3. **Resilience Drills:** Move beyond paper plans to active "endurance" training—rehearsing full system shutdowns, restarts, and large-scale rebuilds.
4. **Continuous Assessment:** Integrate the NCSC Cyber Assessment Framework (CAF) to measure ongoing resilience.
## Implementation Guidance
### For Small Organizations
- **Focus on Backups:** Prioritize offline backups and simple, documented recovery steps.
- **Outsource Response:** Rely on managed service providers (MSPs) or pre-vetted CIR firms, as internal resources will be quickly overwhelmed.
### For Medium Organizations
- **Business Impact Analysis (BIA):** Clearly define which departments must come online first to keep the company solvent.
- **Governance:** Appoint a dedicated incident lead who is not the primary person performing the technical recovery.
### For Large Enterprises
- **Redundancy Testing:** Regularly practice rebuilding entire segments of the environment from scratch.
- **Regulatory Coordination:** Ensure legal and compliance teams have pre-written templates for reporting to regulators (e.g., ICO/NCSC).
## Configuration Examples
While the article focuses on framework strategy, it highlights three technical pillars for the "Rebuild" phase:
- **Patch Management:** Automate the deployment of critical security updates to reduce the attack surface.
- **Access Control:** Implement the principle of least privilege (PoLP) and Multi-Factor Authentication (MFA) during the system rebuild.
- **Secure Configuration:** Use standardized "hardened" builds for all new virtual machines and workstations.
## Compliance Alignment
- **NCSC Cyber Assessment Framework (CAF):** The primary benchmark for assessing recovery capabilities.
- **Cyber Essentials:** Baseline controls for preventing the most common attacks.
- **NIST CSF (Recovery Function):** Alignment with international standards for incident response planning.
## Common Pitfalls to Avoid
- **Ignoring the Human Element:** Failing to account for the emotional toll and burnout of staff working through the recovery.
- **Restoring to the Same State:** Simply restoring infected systems without patching the entry point, leading to a "re-infection" loop.
- **Paper-Only Planning:** Having a recovery manual that has never been tested in a real-world simulation.
- **Communication Vacuum:** Failing to speak to customers or employees early, leading to loss of trust.
## Resources
- **NCSC Response and Recovery Guidance:** hxxps[://]www[.]ncsc[.]gov[.]uk/collection/what-to-do-when-cyber-attacks-disrupt-your-organisation
- **NCSC-Assured CIR Firms:** hxxps[://]www[.]ncsc[.]gov[.]uk/information/cyber-incident-response-services
- **Cyber Assessment Framework (CAF):** hxxps[://]www[.]ncsc[.]gov[.]uk/section/advice-guidance/all-topics/cyber-assessment-framework