Microsoft acquired Activision Blizzard in 2023 to enhance PC and console gaming integration, focusing on the inclusion of Call of Duty in Xbox and PC Game Pass. Call of Duty: WWII, released in 2017, remained active in 2025 but faced issues when hackers exploited remote code execution (RCE) vulnerabilities shortly after its addition to Game Pass. Although no serious damage was reported, the potential risks were concerning, especially given the game's outdated peer-to-peer matchmaking system. Activision introduced the Ricochet anti-cheat system in 2019, but Call of Duty: WWII lacks these protections. In response to the hacking incidents, Activision temporarily removed the game from the Microsoft Store for investigation, while it remained available on Steam and PC Game Pass. Reports of hacks included a streamer experiencing a live hack that changed their desktop wallpaper and the sharing of hacking tools by users.