A working version of the remake of Assassin's Creed IV: Black Flag has leaked on torrent sites ahead of its scheduled release on July 9, 2026. The leak is believed to have originated from an internal production build at Ubisoft, potentially disseminated by individuals with early access, including members of the gaming press. Despite Ubisoft's security measures, including Denuvo Anti-tamper technology, hackers known as DenuvOwO managed to bypass these protections using a hypervisor-based method. Ubisoft has not yet commented on the leak.