I remember MW2 and WAW being crapped on by modders / cheaters beyond belief back around 2011 / 2012. Thanks to that, I learned to hate call of duty and basically never play it again (other reasons too, like it being a crappy game that gets released annually and adds absolutely nothing new to the formula except for maps and stupid killstreak perks.) Got real tired of trying to join a simple FFA match only to find it was filled with 12 year olds doing the moon jump and laughing on their mics..
If you want to mod online, regardless of how justified it is to you, be prepared to accept a ban if the hammer happens to fall on you. A lot of people really don't like cheaters. I mean, just go watch the movie "Casino" with Robert De Niro and watch that part where they crush the guys hands with the hammer after they catch him and his pal counting cards lmao......