

I answered below already, but Windows infostealers and spyware can absolutely work in proton.
It’s no security beyond some file paths being different, from the software’s point of view.
What I tend to do is run dedicated partitions for games and other entertainment, where I could wipe them without consequence, and if they got infected with infostealers or spyware there wouldn’t be anything to get anyway.
And then the partition where anything sensitive is done/saved (like finances) is separate and inaccessible to that boot.




Yes and no.
If you run task manager or something in Proton? It just shows Proton processes:
But all linux process, and tons of information about them, are readable in the /proc directory. They’re just files, accessible to the program.
Try
ls /procyourself.There’s nothing stopping anti cheat from checking that, if it’s configured to do it.
…Are any actually checking /proc?
Shrug.
I wouldn’t be surprised, though. Anticheat devs are aware of linux cheating software.