Okay,first off yes.You can get banned even if not reported.Example-I'm not sure if this is on Cf but steam has an anti-hack type program that will ban you if hacks are detected.But I have never been banned on any game in which I have hacked yet.Because unlike some people I don't run around with wall hacks pre-firing.I at the very least die once so they think i'm not a hacker ill act like maybe I didn't notice them then ill start sneaking up and killing em etc so you have to be careful for things like that.And you have to be careful because if you lets say speed hack and an Admin or Gm catches you,you are 99.9% Fucked.I hope I helped.
I hack and I have never received "Hack tool detected". I think if you don't play like the smileys noobs who have the hack, killing everybody in 15 seconds, it's alright. You should die sometimes to let the others thinking that you don't hack. That's what I do and when I finish a match, I have like 15 kills and 8 deaths. Like that, the other players won't call you hacker all the time.
15-8 is just really a bad score even without hacks I get an k/d off 3
With hacks I get an k/d of alot more.
Anyways just dont play GM or PreFire then your not gonna be found :P
And if somebody says [your name] hacker!! or something
Just dont talk to him so he thinks your focusing :P
Cuz most pro's are focusing on the game. Not on the chat.