Frontline Investigation

Sep 3, 2026 · Information Security

Permission Revoked, Data Still Visible? Uncovering the Four Dimensions of Access Residuals

This article analyzes why revoking user permissions often fails to stop data access, identifying four dimensions of visibility residuals—people, paths, data, and time—and proposes a three-layer verification framework (action, path, result) to ensure actual access termination beyond mere authorization removal.