Dangerous Permissions and Policy Administration

Several of the protected operations for which the .NET Framework provides permissions can potentially allow the security system to be circumvented. These dangerous permissions should be given only to trustworthy code, and then only as necessary. There is usually no defense against malicious code if it is granted these permissions.

The dangerous permissions are explained in the following table.

Permission	Potential risk
SecurityPermission
UnmanagedCode	Allows managed code to call into unmanaged code, which is often dangerous.
SkipVerification	Without verification, the code can do anything.
ControlEvidence	Invalidated evidence can fool security policy.
ControlPolicy	The ability to modify security policy can disable security.
SerializationFormatter	The use of serialization can circumvent accessibility mechanisms. For details, see Security and Serialization.
ControlPrincipal	The ability to set the current principal can trick role-based security.
ControlThread	Manipulation of threads is dangerous because of the security state associated with threads.
ReflectionPermission
MemberAccess	Can use private members to defeat accessibility mechanisms.

See Also

Other Resources

Secure Coding Guidelines