pc is sort of easy to hack, with wall hack and aimbot, but xbox, wii and playstation would be much harder i would think. all in all you shouldnt really try to hack, you may get gold guns and whatnot, but hacking would just ruin the fun. also it is very easy to see if you are hacking.
yes it can be hacked but you need a special program to hack the game XD
Noone has hacked mw3, but I think it is possible to hack or mod modern warfare 3.
There is no wall hacks on Mw3!
yes
You Hack
you dont
Using MW3 Prestige Rank Hack for free by getting it from the Modern Warfare Prestige Hack site and using it to edit and hack your Prestige Level, Rank and unlock everything from guns, camouflage and attachments. Source http://www.mw3prestigehack.net/
With much difficulty.
You can't,and if your thinking about the [Enemy Intel] those are for achievements.
I know I need the Fukien password
Yes, they can hack you from your account. Even if your offline, online, or in a hacked lobby they can still hack you
Keep playing until you get 10th prestige
This is a really simple hack. All it does is doubles your current exp. So, for example if your experience is 2h it will set it to 4h.