Call of Duty: Modern Warfare and Call of Duty: Warzone both still have a problem with cheaters, and developer Infinity Ward isn't tolerating it. In a new statement posted on its Twitter, the studio explained the steps it is taking to eliminate unfair play for the games, as well as what you need to avoid doing if you don't want to get banned.
— Infinity Ward (@InfinityWard) July 24, 2020
The full statement, which you can see above, explains that any bans are related to "unauthorized manipulation of game data" and any third-party software being used to mod or hack can result in a ban. Aimbots, texture hacks, and trainers are all banned, and you should not attempt to modify any of the camouflage patterns you've obtained, nor should you try to alter the memory on your system to get new gear.
Because it has to maintain two games now instead of its usual one, Infinity Ward certainly has its work cut out for it. The standard Modern Warfare multiplayer matches are nothing like Warzone's enormous battle royale fights, but your actions are probably going to catch up to you if you attempt to cheat in either of them.