Asserting a security permission without performing any security checks can leave an exploitable security weakness in your ...

Asserting a security permission without performing any security checks can leave an exploitable security weakness in your code. A security stack walk stops when a security permission is asserted. If you assert a permission without performing any checks on the caller, the caller might be able to indirectly execute code using your permissions. Asserts without security checks are only permissible when you are certain that the assert cannot be used in a harmful fashion, namely, if the code you call is harmless, or users have no way to pass arbitrary information to code that you call.