Hack Tool Detected (1) (2-5), 25520-3 and Disconnected from server

Now I've made this same thread many many times. The Hack Tool Detected came back a few days ago effectively making me inable to play with all of these bugs. It's very simple really. People stop moving, then it shows one of those errors. My cursor is also available and I stop being able to shoot or scope. It's really annoying because this new Zombie mode is really cool but I can't even play long enough to succeed or fail. It's not my anti-virus and I have low ping around 60-90. I also will not get a brand new router/modem for a little game.