Notifications
Clear all
Topic starter
09/07/2026 3:32 pm
TL;DR: When ransomware hits Active Directory, organisations can lose login, authorisation, and recovery paths at once, and manual forest restoration may take more than a week with 50 to 100 steps, according to Commvault. The governance problem is not backup availability but whether identity services can be restored cleanly, predictably, and under pressure.
NHIMG editorial — based on content published by Commvault: identity resilience, Active Directory recovery, and ransomware disruption
Questions worth separating out
Q: What fails when Active Directory recovery is untested after ransomware?
A: Untested recovery fails in sequence, trust, and timing.
Q: Why does identity recovery matter more than backup ownership in AD incidents?
A: Because a backup is only useful if the organisation can restore identity services into a clean, trusted state under pressure.
Q: What do security teams get wrong about AD resilience?
A: They often treat recovery as a technology purchase instead of an executable control.
Practitioner guidance
- Test AD forest recovery under real incident conditions Rehearse the full restoration sequence in a controlled environment, including dependency order, operator handoffs, and validation steps for authentication and authorisation services.
- Validate cleanroom recovery before production re-entry Restore identity services in an isolated environment first, then confirm there is no hidden persistence, configuration drift, or trust corruption before reconnecting production systems.
- Map minimum viable identity services Define which identity systems must return first for the business to operate, then tie each one to a tested recovery runbook and named owner.
What's in the full article
Commvault's full article covers the operational detail this post intentionally leaves for the source:
- Detailed identity recovery workflow for AD and Entra ID restoration after ransomware.
- Practical use of Cleanroom Recovery and AirGap for isolated validation before production re-entry.
- How point-in-time comparison and rollback support unwanted or accidental directory changes.
- The partnership framing between Deloitte and Commvault for building recovery programmes.
👉 Read Commvault's analysis of Active Directory recovery and identity resilience →
Active Directory recovery failure: is your identity resilience ready?
Explore further
09/07/2026 3:53 pm
Identity resilience fails when organisations confuse backup existence with recovery capability. This article shows that the decisive issue is not whether AD backups exist, but whether restoration can be executed cleanly, repeatably, and under adversarial conditions. Identity services are the trust layer for human access, privileged operations, and connected workloads, so recovery must be validated as a control outcome, not assumed as an asset inventory fact.
A few things that frame the scale:
- The average time to mitigate a leaked secret is 36 hours, highlighting the operational burden of manual remediation processes, according to The 2024 State of Secrets Management Survey.
- 88% of security professionals are concerned about secrets sprawl, with 49% of those in larger organisations described as very concerned.
A question worth separating out:
Q: Who is accountable when identity services cannot be restored after a cyberattack?
A: Accountability should sit with the owners of identity operations, cyber recovery, and business continuity together, because AD outage affects all three. If restoration timelines are not defined and tested, no single team can credibly claim readiness when access services fail.
👉 Read our full editorial: AD recovery failure turns identity resilience into a board risk
