The rate at which software security holes are being discovered is accelerating daily. Without spending hours or days checking every computer, it's difficult to be sure that your systems are properly updated to prevent unauthorized access. On top of this is the problem of some security patches that reopen the hole plugged by an earlier patch, but the computer doesn't know the first patch has been uninstalled.

I'll scan your entire network for security vulnerabilities, not by checking file versions on the computers in question, but by attempting a remote break in from somewhere else on your network using all known security holes.