Your security team uses encryption keys to ensure confidentiality of user data.

Enable automatic key version rotation on a regular schedule:

Regularly rotating keys reduces the impact of a potentially compromised key by limiting the amount of data encrypted with a single key version.

Set up automatic key rotation in Cloud KMS to ensure keys are rotated without manual intervention.

Limit the number of messages encrypted with each key version:

Reducing the number of messages encrypted with each key version minimizes the potential data exposure in case of a key compromise.

Implement policies to ensure that new key versions are used periodically to limit the usage of each key version.