PCI DSS 9.4.1.1: Store Offline Media Backups Securely
Offline media backups containing cardholder data represent a critical vulnerability if not properly secured. Control 9.4.1.1 requires organizations to store these backups in physically secure locations, preventing unauthorized access and theft. This control is essential for maintaining data protection even when systems are disconnected from your network.
What this means
This control mandates that any physical media (tapes, external drives, USB devices) containing cardholder data must be stored in a secure, controlled location. The storage location must have restricted access, environmental protections, and inventory controls to ensure backups remain confidential and intact.
How to comply
- 1.Identify all offline media backups containing cardholder data within your organization
- 2.Designate a secure storage location with restricted physical access and monitoring
- 3.Implement environmental controls (temperature, humidity) to protect media integrity
- 4.Maintain detailed inventory records of all backup media with location and contents
- 5.Establish access controls limiting retrieval to authorized personnel only
- 6.Document the secure storage procedures in your data protection policy
- 7.Conduct regular audits to verify backups remain securely stored and accounted for
- 8.Develop a backup lifecycle policy including secure destruction at end-of-life
Evidence auditors look for
- Secure storage facility access logs showing restricted entry
- Inventory records of offline backup media with storage locations
- Physical security documentation (locks, alarms, surveillance)
- Environmental monitoring records (temperature/humidity controls)
- Backup storage policy and procedures documentation
- Access authorization lists for personnel retrieving backups
- Audit reports verifying secure backup storage compliance
Frequently asked questions
When will FAQs be available?
The FAQ for this control is currently being prepared.
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