QCSB - Security, Troubleshooting & Reference

Understand how QCSB prevents path traversal outside a configured connection root so file operations remain inside the authorized storage boundary.

Understand how QCSB protects passwords, private keys, OAuth tokens, and provider secrets and limits their exposure in storage and application output.

Understand signed QCSB item references and why frontend-supplied paths are not trusted as authoritative storage locations for file operations.

Understand QCSB CSRF protection and server-side authorization and why sensitive file operations are revalidated instead of trusting browser requests.

Understand OAuth state and callback security in QCSB Google Drive and OneDrive connection flows and how callbacks are tied to authorized requests.

Understand how QCSB uses safe error messages, logging, and secret redaction to provide diagnostics without unnecessarily exposing sensitive credentials.

Understand QCSB audit history and accountability, including where durable operational records are kept even though QCSB has no Activity Log tab.

Understand how QCSB preserves stored data across entitlement downgrades, extension updates, and uninstall scenarios and what administrators should verify.

Troubleshoot QCSB installation and runtime requirements when setup, dependencies, PHP capabilities, Joomla integration, or environment checks report problems.

Troubleshoot QCSB Workspace access and permissions by checking menu access, allowed groups, roles, overrides, inheritance, and server-side authorization.

Troubleshoot QCSB storage roots and provider connectivity by checking connection settings, authorized roots, credentials, dependencies, and provider access.

Troubleshoot QCSB uploads and file operations by checking effective permissions, provider capabilities, limits, conflicts, and current connection state.

Troubleshoot QCSB Recovery Protection and Recovery Vault actions by checking protection requirements, storage, permissions, records, and destination conflicts.

Troubleshoot QCSB Scheduled Tasks, notifications, and updates by checking task configuration, execution method, queues, entitlement, and Joomla update state.

Use the QCSB terminology and support checklist to distinguish current public features from non-public concepts and gather useful details before support.