The download version of DCS:BS has a DRM system called Starforce E-commerce, and unlike with the SF DVD protection there're no reports of it causing any harm whatsoever. It doesn't install any drivers or anything, but instead works as a runtime check when you start Black Shark.
Cracks and DRMs or not I bought it yesterday because I want to support folks who create quality sims, even if I'm not exactly a rotorhead and/or modern-day warfare buff. Hell, if I really wanted to _filch_ stuff I'd most likely steal something like a game an unnamed publisher has the audacity of calling a submarine SIMULATOR, and yet at the same time couldn't even give the boats independent engine control

Too bad, then, that I didn't, but went and bought it instead
But really, to filch a sim that really is good and a labor of love at the same time? No effin' way...