The principle of least privilege requires granting the minimum level of access and permissions necessary for users, applications, or services to perform their tasks. This decreases the risk of unauthorized or accidental exposure, modification, or deletion of your encrypted data. To adhere to this principle, you should use strong authentication and authorization mechanisms such as passwords, tokens, multi-factor authentication, or role-based access control to verify and limit access to your encrypted data. Additionally, it is recommended that encryption is applied at the granular level such as individual files, fields, or records rather than at the bulk level like entire disks or databases. This allows for different encryption keys and policies for various types of data based on their sensitivity and usage. Lastly, encryption keys should be rotated and revoked regularly or when they are compromised, expired, or no longer needed in order to prevent stale or stolen keys from being used to access your encrypted data.