USB vac authentication error?

I bought my first cheat today and have been running it off my usb since I assume it’s safer however I’ve been booted out of multiple comp games due to a vac authentication error. Would running the cheats off a usb be the cause of this or is there no corralation at all? Also is it safer to run cheats off a usb or off a hdd?

The best idea will be to contact the seller.