I posted a thread about this earlier but feel it relevant here as well.
After doing some research it seems to me that the sole entity responsible
for all the hackers is Sony. 99% of the hacks used in Ghosts require a
Jailbroken PS3 to run. So IMO the fault lays 100% with Sony for letting
people with modified PS3's connect to their network. You take away the
jailbroken PS3's and I guaranty you would rarely see 99% of the hacks/exploits
we are now seeing in this game as well as other games.
With Sony being a huge multi billion dollar company I find hard to believe
they can't find a way to implement some way to detect these modified consoles.
Just my 2% of a $1.00!
-deicideusa