Design a ransomware-resilient strategy that starts with critical business assets, protects recovery paths, and proves that backups can actually restore operations.
Start with business-critical assets
An architect does not begin with a product list. Identify the processes the organization must restore, the data and identities those processes depend on, and the acceptable recovery time and recovery point. Threat modeling then connects likely attacks to those assets so investment follows business impact.
Protect the recovery system
Backups are part of the security boundary. Separate backup administration from production administration, use immutable or logically isolated copies, require strong authentication for destructive operations, and monitor changes to backup policy. A backup is not a recovery capability until the organization has restored it in a controlled test.
| Requirement | Architecture response |
|---|---|
| Limit blast radius | Segmentation and least privilege |
| Preserve recovery data | Isolated, immutable backup copies |
| Recover within the target | Tested runbooks and dependency order |
| Resist admin compromise | Privileged access workstations and just-in-time roles |
Prioritize privileged access and updates
Ransomware commonly turns one foothold into broad impact through privileged accounts and unpatched systems. Treat privileged access, emergency access, security updates, endpoint protection, and BCDR as one resiliency program. Rank remediation by exposure and business consequence, not only by vulnerability severity.
Validate the design
Run restore exercises that include identity, networking, secrets, applications, and data. Capture measured recovery time, missing dependencies, and decisions that need an owner. The exam favors designs that prove recovery over designs that only state a backup policy.