After adding in a kernel-level anti-cheat solution to Call of Duty: Vanguard, Activision revised its enforcement policy, highlighting that severe infractions could result in players getting banned in past, present, and future Call of Duty titles.
https://www.notebookcheck.net/Activision-s-new-Call-of-Duty-ban-policy-could-get-you-kicked-from-multiple-CoD-titles-including-future-ones.579580.0.html