Ubisoft has been in the headlines the last year due to its use of DRM that requires an "always-on" Internet connection. If you ever have a connection hiccup or just plain lose service, you are returned to the main menu. With the DRM, you cannot play games offline, even in "single player" modes. This has happened multiple times where an Ubisoft authorization server has gone down, leaving legitimate players standing idle while those with pirated copies play happily.
The most recent game to feature the DRM is "Driver: San Francisco," which will launch in August. In an interview with PC Gamer, the developer says the DRM has been a success, seeing "a clear reduction in piracy of our titles which required a persistent online connection". Despite the outcry over the DRM, it appears Ubisoft believes it is here to stay.