perx injector is, as the name states, an injector. Not a hack. All perx does is 'inject' '.dll' files into '.exe' programs. So, for example, you could use perx to inject 'chamshack.dll' into 'suddenattack.exe' but if 'chamshack.dll' were detected, your hack wouldn't work, not because of perx, but because of the .dll file. Many .dll files have been detected due to the recent patch, so just wait a few days for a new one to be released.