DATA-14

Are data backups encrypted?

Explanation

This question is asking whether your organization encrypts the data backups it creates. Data backups are copies of important information stored for recovery purposes in case the original data is lost, corrupted, or compromised. Encryption is the process of converting data into a coded format that can only be read by someone with the correct decryption key. When backups are encrypted, it means that even if an unauthorized person gains access to the backup files, they cannot read the actual data without the encryption key. This question is asked in security assessments because unencrypted backups represent a significant security risk. Backups often contain sensitive or confidential information, and they may be stored in locations with different security controls than production systems (such as offsite storage, cloud repositories, or portable media). If these backups are compromised and they're not encrypted, all of that sensitive data is exposed. When answering this question, you should: 1. Clearly state whether your backups are encrypted or not 2. Specify what encryption method or standard is used (e.g., AES-256) 3. Mention whether encryption is applied to all backups or only certain types 4. Describe when encryption occurs (at rest, in transit, or both) 5. Explain how encryption keys are managed If you don't encrypt backups, you should explain why and what compensating controls you have in place to protect backup data.

Example Responses

Example Response 1

Yes, all our data backups are encrypted We use AES-256 encryption for all backup data, both while in transit and at rest Our database backups are encrypted at the application level before being transferred to our backup storage systems For file system backups, we use encrypted backup software that applies encryption during the backup process All encryption keys are managed through our enterprise key management system with proper access controls and key rotation policies We maintain separate encryption keys for different backup sets to minimize risk exposure.

Example Response 2

Yes, we encrypt our critical data backups Our customer data and financial information backups use TLS 1.2 encryption during transfer to backup locations and are stored using AES-128 encryption at rest Our backup solution automatically handles the encryption/decryption process using keys stored in a hardware security module (HSM) System configuration backups and non-sensitive operational data backups are not currently encrypted, as they don't contain confidential information We review our backup encryption coverage quarterly to ensure all sensitive data is appropriately protected.

Example Response 3

No, our data backups are not currently encrypted We recognize this as a security gap in our infrastructure and have included backup encryption in our security roadmap for implementation within the next quarter As a compensating control, we currently store our backups in a physically secured data center with strict access controls, and we implement network segmentation to isolate the backup storage systems Only authorized backup administrators have access to the backup infrastructure We're evaluating several backup encryption solutions and plan to implement AES-256 encryption for all backup data by the end of Q3.

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Neil Cameron