It's a good thing that Call of Duty: WWII is going through its beta testing phase at the moment, as Activision and Sledgehammer Games have some serious problems to fix. In public multiplayer testing cheaters and hackers have found a way to manipulate the game massively in their favor. This has lead to some players describing it as almost impossible to find a game without at least one player actively using aimbots or similar hacks.
Fortunately at least, kill cams and the ease of modern streaming and video recording makes finding many of these hackers pretty easy, but banning them from an effectively free to play game (for now), isn't going to do much to improve the situation for players who would rather not face off against digital superheroes.
As PCGamer points out, this isn't necessarily cause for alarm, but it should warrant a swift and strong response from Sledgehammer Games and Raven Software (who helped develop the War Mode for the PC port) as otherwise Call of Duty: WWII will barely get off the ground at launch.
Consider too that the response from fans to the last CoD game, Infinite Warfare, was extremely lacklustre and Activision will want its next game in that series to really land. Rampant cheating would put a dampener on that considerably.