StarForce

"If Protect.exe and other relevant files have a size of 0 kb, they are just dummies and protection is inactive"

Beware installing older versions of SF on Windows 7+, it can break the operating system and cause a boot loop.

DPM-based protection, requires .MDS to function. "Use Alcohol v1.9.6 or latest BlindWrite for DVD9 in case of problems, or DT Pro, SF Crypto and SF ProActive does not require mds"