After deploying a new application on Google Cloud Platform (GCP), a security engineer discovers that...

Unauthorized access to cloud backend services should immediately trigger examination of identity and access controls because excessive or improperly assigned permissions are a common source of cloud compromise. Reviewing IAM roles allows the responder to determine which principals can access the backend, identify over-privileged or compromised identities, revoke unnecessary privileges, and enforce least privilege. Security Command Center improves ongoing detection but does not directly correct the permissions enabling current unauthorized access. VPC Service Controls can provide an additional service perimeter but should complement rather than replace correct IAM authorization. Migrating the application to another project is disruptive and could reproduce the same access-control weakness if the underlying configuration is not fixed. ECIH cloud incident handling emphasizes addressing the compromised access path and reducing unauthorized privileges before implementing broader defensive improvements.

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