To add to the sibling comment: - Denuvo Anti-cheat (used by Doom Eternal's multiplayer mode) - Vanguard for Valorant I refer to them as rootkits since they i

To add to the sibling comment: - Denuvo Anti-cheat (used by Doom Eternal's multiplayer mode) - Vanguard for Valorant I refer to them as rootkits since they install Ring-0 kernel modules that are updated outside of your control.