[Trae Johnson]

That is a good definition of the “Fail Securely” principle. I agree that the way an error is processed by a system can be the difference between staying secure and leaking sensitive data. Your example of a detailed error message is just correct—revealing technical details gives attackers exactly what they need to mount an attack. Designing systems to deny access and protect data in case of failure keeps even unwanted issues from generating security intrusions. It’s a simple but efficient principle that reiterates the importance of anticipating failure in all secure system design.