# Verify the recovery region's data and identity boundaries

A second region can introduce new copies, grants and support paths. Review them as part of the service's real operating footprint.

By Cobnex editorial. Published 2026-09-10. Updated 2026-09-11.

## Identify every replicated copy

List databases, objects, logs, backups and secrets made available for recovery. Record their destination and the identities able to read or manage them.

Do not assume that choosing an application region also fixes the location of every supporting service. Check the actual configuration and provider behaviour for the data involved.

For a real deployment, assess contractual and applicable legal requirements with the responsible owner. Avoid reducing those decisions to a region-name label in a diagram.

## Test authority from the target

Verify that ordinary users and runtime services receive the intended permissions in the recovery environment. Include denied actions and cross-tenant checks.

A recovery administrator may have broad access, but that should not become the application's normal runtime identity. Keep emergency authority distinct and auditable.

Check keys and secret references using the documented recovery path. Availability without appropriate access is not enough, and broad access added during a drill should not remain unexplained.

## Follow operational data too

Regional recovery may centralise logs or diagnostics outside the application region. Review their contents and access independently of the primary database.

Error paths can expose sensitive records during reconciliation. Use operation identities and bounded diagnostics where possible rather than copying full payloads into incident chat.

Keep any temporary exports protected and assign a retention and cleanup owner.

## Reassess after failover

Confirm the active region's runtime permissions, external allowlists and administrative access match the intended state. Temporary grants made to restore service need explicit follow-up.

Review the original region before it rejoins. Its credentials and worker configuration should not permit independent writes against an outdated copy.

The access review should describe both normal and recovery operation. A design that is well restricted only before the first regional incident leaves its most sensitive transition insufficiently controlled.

## Test an allowlist that changes with location

A partner integration may accept requests only from approved outbound addresses. The recovery application's credentials can be valid while its traffic is rejected from the second region. Verify the safe test connection from the target and confirm that the approved network scope remains narrow. Broadly opening the partner endpoint during an incident may restore connectivity but leaves a different access model that requires explicit review and removal of temporary exceptions.

## Sources

- [OWASP: authorisation guidance](https://cheatsheetseries.owasp.org/cheatsheets/Authorization_Cheat_Sheet.html)