EA (Electronic Arts) are continuing to expand their home-grown EA Anti-Cheat, with an announcement that Battlefield 2042 is also moving over to it.
This isn't actually something entirely new though, as it was given a Deep Dive back in 2022 and released with Fifa 23 that same year, and it's also in the newly released EA SPORTS FC 24. Battlefield is definitely not the first game to get it but it's a growing issue.
Part of the problem is that it doesn't work on Linux / Steam Deck, with it being blocked by EA. It's a kernel-mode anti-cheat and anti-tamper solution, which as we've seen from other anti-cheats is particularly problematic for Linux / Steam Deck. And it's likely EA will continue to use it with new games, and potentially get other older games updated to use it too. So if they got Respawn to switch over to it, this would kill Apex Legends on Linux / Steam Deck too.
Fifa 23 and EA SPORTS FC 24 are rated Unsupported on Linux / Steam Deck due to it, and while Battlefield 2042 previously used Easy Anti-Cheat, they never bothered to hook up support for that on Linux anyway (even though EAC supports Linux), so it's just going to continue to be Unsupported.
We can only hope that Valve are keeping an eye on the situation and speak to EA to eventually get support for it on Linux / Steam Deck with Proton.