The Recover function
The Recover function ensures that an organization can restore its capabilities and services after a cybersecurity incident. It requires having a coordinated plan to return to normal operations while improving resilience based on lessons learned from the event.
What it means
Recover focuses on the transition from "incident response" back to "business as usual." While the Respond function is about containing a threat, Recover is about the strategic restoration of systems and data to minimize downtime and financial loss.
In practice, this involves prioritizing which business functions must come online first (Criticality Analysis) and ensuring that the recovery process does not re-introduce the vulnerability that caused the incident in the first place. It also encompasses the communication strategy used to inform internal stakeholders, customers, and regulators about the restoration of services.
Finally, Recover is an iterative process. Every single recovery effort—whether from a minor outage or a major breach—must be analyzed to identify gaps in the current plan, which are then used to update technical controls and policy documents.
How to meet it
- Develop a formal Recovery Plan that outlines specific steps for restoring systems, data, and network connectivity.
- Define clear Recovery Time Objectives (RTO) and Recovery Point Objectives (RPO) for all critical business processes.
- Implement a robust backup strategy that includes "air-gapped" or immutable backups to protect against ransomware.
- Establish a communication plan that identifies who must be notified during the recovery phase and how those messages will be delivered.
- Schedule and execute regular restoration tests (e.g., tabletop exercises or full system failovers) to ensure backups are functional.
- Integrate a "Lessons Learned" process into the incident lifecycle to update recovery procedures after every significant event.
Evidence an auditor asks for
- The written Recovery Plan or Business Continuity Plan (BCP), including version history showing regular updates.
- Documentation of backup success logs and evidence of successful restoration tests (e.g., a "Restore Test Report").
- Post-Incident Review (PIR) reports that demonstrate how recovery activities were analyzed to improve future resilience.
- A defined list of critical assets categorized by their priority for restoration.
- Evidence of communication logs or templates used to notify stakeholders during previous outages or drills.
Common pitfalls
- "Paper Compliance": Having a detailed Recovery Plan on file that has never been tested in a real-world scenario, leading to failure during an actual crisis.
- Lack of Isolation: Storing backups on the same network as production systems, allowing ransomware to encrypt both the live data and the recovery source.
- Static Documentation: Failing to update the recovery plan after significant changes to the IT infrastructure or organizational structure.