The Immutable Laws of Security | Microsoft Learn

Law #7: Encrypted data is only as secure as its decryption key.

Productivity always wins – If security isn't easy for users, they'll work around it to get their job done. Always make sure solutions are secure and usable.

Ruthless Prioritization is a survival skill – Nobody has enough time and resources to eliminate all risks to all resources. Always start with what is most important to your organization, most interesting to attackers, and continuously update this prioritization.