Ubisoft says its DRM “is a success” due to reduction in piracy 

A Ubisoft representative has told PC Gamer it has seen “a clear reduction in piracy of our titles which required a persistent online connection, and from that point of view the requirement is a success.” This is thanks to the firm's use of "always on" DRM for PC games, which was first used with The Settlers 7, but didn't cause too much of an uproar until Assassin’s Creed 2 came out on the system due to shaky internet connections and server issues causing game log outs or loss of saves. Ubisoft clarified earlier reports which stated From Dust on PC would require the DRM, and informed VG247 that the single-player portion of the game would not make use of the DRM.