From what I've read the pirates haven't been able to crack the DRM completely. Yes, they have been able to start the game and play the single missions, but unlike typical "call home" DRM schemes that only verify the serial number or some such, the UBI DRM is actually an integral part of the game. A critical component of the dynamic campaign (mission generator I suspect) is actually on UBI's servers, so the game has to "call home" to get a new mission every time you are in port. It's sort of similar to Aces High in that you can play off-line missions, but the "campaign" (MA) is run on servers, even if it's a single player campaign. Unless the pirates get their hands on UBI's server-side software, or engineer the missing parts of the dynamic campaign themselves, Silent Hunter 5 is in effect uncrackable. I like it... It is far, far less intrusive than other DRM schemes like StarForce, yet much more effective.