The Ricochet anti-cheat is a kernel-level bit of software added to Warzone late last year around the release of the new Caldera map.
While the much-hyped Ricochet anti-cheat has led to vast improvements to the battle royale experience when it first dropped, it would appear that the more nefarious players out there have figured out a way around it.
Warzone players have been reporting an increasing number of run-ins with cheaters recently.
Peaking at the official Warzone reddit there are reports of cheaters returning to ruin the fun.