Ubisoft have announced that their third-person hero-based melee fighting game FOR HONOR will be blocking all SteamOS / Linux players on September 10th.
Warriors, we are happy to announce that For Honor’s competitive experience is leveling up with the launch of Ranked Dominion and the rework of Ranked Duel.
The chance to prove yourself on a global level is here!
To reinforce a fair competitive environment, the team is introducing additional player safety measures. We are removing For Honor from the Linux platform to ensure a safer environment for our players as we cannot meaningfully deploy protection on this platform. This means that For Honor will no longer be playable on Steam Deck starting September 10th. We will continue to investigate different ways to improve our anti-cheat with the possibility of reopening the platform in the future.
Their announcement rubs me the wrong way. It reads as though Linux is the problem. They’re doing Linux “to ensure a safer environment” and to “reinforce a fair competitive environment”
Implying Linux is unsafe, unfair, and anticompetitive (i.e. promotes cheating).
They act as if any kernel level anti-cheat even stops a fraction of cheaters. Windows is just as unsafe and unfair in this regard. And it’s not like the already pretty small player base is majorily on Linux.
I wonder how much more analytics they have access to with them because I doubt they have the intention of infecting customers with actual viruses and I can’t think of any other reason they would have such a big boner for them other than harvesting more data to sell.
When I say “viruses” I refer to the anti-cheats themselves. Like, exactly because of what you said: they live at kernel-level (sometimes even at a lower level, like Vanguard), so they can literally see anything you do (and everything you don’t), and everything you have (and everything you don’t) and exfiltrate all that data without your knowledge, much less your consent, if that’s not a virus (more specifically, a rootkit)…
C’mon, they can even brick your PC, as it’s demonstrated that for example Vanguard does:
Independent research & analysis on Riot Vanguard / kernel-level anti-cheat:
Dorner & Klausner (2024) — “If It Looks Like a Rootkit and Deceives Like a Rootkit: A Critical Examination of Kernel-Level Anti-Cheat Systems” (peer-reviewed, ACM ARES 2024)
Check Point Research (Aug 2026) — “BTR Reforged”: Microsoft’s own signed BTR.sys driver weaponized as a universal kernel operation engine (no vulnerability required)
Shattered.io (2026) — Comprehensive overview: the DMA “bricking” incident, the four UEFI CVEs, Kunal Ganglani’s statement on unaudited kernel drivers, and the Genshin Impact mhyprot2.sys BYOVD precedent
Direct link to announcement instead of low effort spam blog: https://www.ubisoft.com/en-gb/game/for-honor/news-updates/4WKJhG6v6C9sbCOZkFZ6wG/ranked-faq
Relevant part:
They should just make a separate server and ranking for linux players.
Their announcement rubs me the wrong way. It reads as though Linux is the problem. They’re doing Linux “to ensure a safer environment” and to “reinforce a fair competitive environment”
Implying Linux is unsafe, unfair, and anticompetitive (i.e. promotes cheating).
They act as if any kernel level anti-cheat even stops a fraction of cheaters. Windows is just as unsafe and unfair in this regard. And it’s not like the already pretty small player base is majorily on Linux.
Yeah, they just want to keep installing fucking viruses on our devices and since they can’t, they throw a huge tantrum.
I wonder how much more analytics they have access to with them because I doubt they have the intention of infecting customers with actual viruses and I can’t think of any other reason they would have such a big boner for them other than harvesting more data to sell.
When I say “viruses” I refer to the anti-cheats themselves. Like, exactly because of what you said: they live at kernel-level (sometimes even at a lower level, like Vanguard), so they can literally see anything you do (and everything you don’t), and everything you have (and everything you don’t) and exfiltrate all that data without your knowledge, much less your consent, if that’s not a virus (more specifically, a rootkit)…
C’mon, they can even brick your PC, as it’s demonstrated that for example Vanguard does:
Independent research & analysis on Riot Vanguard / kernel-level anti-cheat:
https://arxiv.org/abs/2408.00500
PDF: https://arxiv.org/pdf/2408.00500
https://gist.github.com/gmh5225/2b430b6025c8888196dd95c8557bfc6f
https://archie-osu.github.io/2025/04/11/vanguard-research.html
https://arxiv.org/html/2512.21377v1
https://blog.quarkslab.com/exploiting-lenovo-driver-cve-2025-8061.html
https://blog.quarkslab.com/exploiting-lenovo-driver-cve-2025-8061_part2.html
https://zonifer.dev/posts/byovd-kernel-driver-hardware-primitives.html
https://research.checkpoint.com/2026/btr-reforged-weaponizing-defenders-remediation-driver-as-a-kernel-operation-primitive/
https://shattered.io/vanguard-anti-cheat-2026/
https://en.wikipedia.org/wiki/Kernel-level_anti-cheat