That was the whole point of HackShield in the first place - to detect hacks -.-'
Now, to modding. HackShield does not do anything with it! I can tell you that for sure. If there are any checks, it is an internal game check - HackShield is not responsible (and will never be responsible) for checking the integrity of game files. HackShield is an addon, and it will never have the integration of something internal like a file check.