As a software developer maintaining legacy code you discover that the architecture of the program is inherently insecure. You have found evidence that the program violates the separation of privilege principle. Of the following choices, which could mitigate the vulnerability?

Question $34$ options:

Employ physical or logical separation to reduce risk from sharing

Require user authentication plus a cryptographic key

Check every access attempt

Ensure the protection system should be small, simple, and straightforward