I had to log in and make my first post on this. I have ALL the codes and tools hackers use, there are dozens more websites that have them, but 1 forum I follow (and I am no hacker, but I like to see what they are up to since I am a programmer myself, not to mention they have good info about the up coming games coming out) is NGU here are the relevant links to the C# codes and offsets, dvars and etc they use.
If support wants me to narrow down the threads more, I will be happy to, they even have anti-ban software they are attempting to use. Demonware I believe it's called is used to ban the console, they have access to that now as well.
Call of Duty Ghosts - NextGenUpdate
Call of Duty: Ghosts Mods, Cheats, and Glitches - NextGenUpdate
Call of Duty: Ghosts Glitches and Tricks - NextGenUpdate
Now these links are to the the main areas where they are posting tools (you can pay for more access but I don't pay since well, I don't have a need to). These are all for the PS3 version of the game, not Xbox, not PC.
All that truly needs to be done is very simple in concept, but tough to execute in a quick fix update. What they need to do, is have the system check the dvars, offsets etc etc upon loading into multiplayer. If anything has been changed, don't allow the console access (or do what other games have done and have a "cheater" pool). Once in a MP lobby, if you try to mod, the game will once again check things before loading the game. Once again any change and they are denied. Now we can take this one step further because some people do RTM (real time modding) and have the system monitor itself so see if things are happening that shouldn't be, ie spawning people in a spot that shouldn't have a spawn. Now lets take this one more step further, if running checks during the game would slow it down to much, they would need to talk to Sony about blocking off memory access so while in a game nothing can be changed. That is a different and a much more uphill battle. Till memory blocks are blocked there will be no 100% fix.
Now I don't know how much any of this would slow down the console with all the checking, but if there MUST be a fix, these are some options they can look at. The truly big issue is that PS3 is so hacked to hell that it might be to late to stop them. To be honest, there is only so much IW and Acti can do without Sony doing updates first, and that, will be very unlikely.
Sorry if I rambled, its 3am, I just got home from work, and my mind is running 100mph.
Take the links, take the info and lets hope IW and Acti can do something with what I have provided.
EDIT: If you want to re-post this information to a better thread location, or if you want send it directly to IW/Acti please just make sure and quote me, since this is my theories and ideas, and I would love to help support from either of them get more knowledge of whats happening, and or even give them more ideas, since I have quite a few others.