A restore is complete only when authorized people can access validated data or a functioning system in an environment the organization is prepared to operate.
1. Define the test before touching a backup
Choose a representative business service or dataset with an owner who can confirm whether the result is usable. Write down the test boundary, approved restore location, expected recovery point, target timing, dependencies, and stop conditions.
Do not conduct an unapproved production restore. Use an isolated or otherwise controlled location and coordinate any change that could affect retention, replication, licensing, network access, or business systems.
- Business service, dataset, or system being tested
- Named business owner and technical operator
- Approved restore point and reason for selecting it
- Isolated destination and access controls
- Expected recovery time and maximum acceptable data loss
- Dependencies such as identity, DNS, applications, encryption keys, licenses, and networks
- Conditions that require the test to stop and escalate
2. Verify access without relying on everyday accounts
A ransomware event may compromise or disable the same identity systems and administrator accounts used in daily operations. The test should verify how authorized people reach backup administration, recovery documentation, credentials, keys, and vendor support when normal access is unavailable.
- Emergency administrative access exists and is protected
- Recovery contacts and instructions are available outside the affected environment
- Required encryption keys, secrets, or certificates can be accessed by authorized people
- Backup deletion and retention controls are separated from routine accounts where practical
- Every emergency access step is logged and reviewed after the test
3. Restore into a controlled environment
Record the actual start time and each material step. Note manual dependencies, missing permissions, software-version conflicts, bandwidth limits, provider delays, and decisions that were not present in the written procedure.
- Confirm the selected backup exists and matches the intended recovery point
- Validate the destination is isolated or controlled as planned
- Restore the required data, configuration, or system components
- Record elapsed time separately for retrieval, restoration, validation, and handoff
- Scan or inspect restored content as appropriate before reconnecting
- Avoid overwriting the only usable copy or changing production data
4. Validate integrity and business usability
Technical completion is only one checkpoint. The system or data must be opened and reviewed by someone who understands the business process. Sample records, dates, relationships, permissions, and critical transactions rather than relying only on a successful restore message.
- Files or records open without unexpected corruption
- The recovery point matches the documented objective
- Application services start and required integrations behave as expected
- Authorized users can access the result and unauthorized users cannot
- The business owner confirms representative work can resume
- Any missing period, dependency, or manual workaround is documented
5. Record recovery evidence
Create a concise test record that can support operational planning, insurer questions, customer assurance, and the next exercise. Do not include passwords, secrets, sensitive records, or unnecessary screenshots of protected information.
- Test date, scope, backup source, and restore destination
- People who performed and validated the test
- Recovery point achieved and total elapsed time
- Validation performed and business-owner decision
- Exceptions, failed steps, workarounds, and residual risk
- Corrective actions with owners, due dates, and evidence
- Approved cleanup of the temporary restore environment
6. Turn failure into a narrower next test
A failed restore test is useful when it produces an owned corrective action. Separate backup-product problems from missing identity access, unavailable documentation, application dependencies, insufficient capacity, or unclear business priorities.
Retest the failed step after correction. Then schedule broader tests based on system consequence and rate of change rather than assuming one successful file restore proves organization-wide recovery.
Service and advisory boundaries
This checklist is directional operational guidance. It does not certify recoverability, compliance, insurance coverage, legal sufficiency, or protection against ransomware. Recovery design and testing should be approved by the system owner and coordinated with the organization’s IT, backup, security, legal, insurance, and other qualified advisers as applicable.
Official guidance reviewed
Tallgrass reviewed the following primary guidance while preparing this operational resource. Use the source publications for their full scope and limitations.
- #StopRansomware Guide — Cybersecurity and Infrastructure Security Agency
- OT Backup Quick Start Guide — National Institute of Standards and Technology
- Ransomware Risk Management: A CSF 2.0 Community Profile — National Institute of Standards and Technology