Dude, you shouldn't scare the crap out of people saying that "ESTABLISHED" means that they're hacked. They aren't hacked, really.. It's just that the permissions for that IP Adress is ESTABLISHED, nothing to get scared of! You could aswell be hacked if you are very unlucky, but most often you aren't. You could check your downloads that you've made lately and make sure that the following steps is checked!
1. The post is Approved by a Minion that actually has the game!
2. Make sure that the hack has a LEGIT testor
3. Always look for 2 virus scans (Shouldn't be Approved if the post doesn't have it)
4. Check that the post is created by a Trusted member, you might see this on his MPGH level, his posts and so on..
NOTE: Treyarch is taking automatic screenshots of your SCREEN while you are playing Black Ops II/2. This means that they will see Crosshair hack, Wallhack, ESP, Chams, Fullbright and so on..