Call of Duty: Warzone has been suffering from a serious cheating crisis in recent weeks. The problem has been making the game more or less unplayable for many, and even wrecking a hotly anticipated event hosted by popular streamers.
Finally, Infinity Ward is stepping up with new anti-cheat measures.
The new measures are going live this week with additional features being added soon. Not only is security being tightened, but players are also going to receive more feedback for the sake of transparency. Hopefully, the effects will quickly become apparent in-game as well.

Players will now be informed if accounts they report with the in-game report function are actually banned, letting you know how much of an effective impact you make on game safety, which will help motivate players to report cheaters. You'll certainly be more likely to put more effort into it when you know it isn't for nothing.
Beyond this, IW have developed some "additional dedicated security updates". There isn't any clarification on what these are, but we assume the cheat detection algorithms got an upgrade to make sure cheaters can't just fly under the radar.

