I've been offline for a while, but I've just seen this:
The Associated Press: New Antivirus Software for Playstation 3
The company bills the software as the first of its kind for a home gaming system. It was released earlier this month as part of a PS3 upgrade and will be free until April.
This is a really positive thing to see; by the fact that there is a market there shows that "Joe gamet" is thinking about security , it's a shame that sony aren't giving this away for free but I guess that business .
A word of caution to our friends, please, please enure that you product doesn't affect performance else we will end up back to the old days where the first trouble-shooting step will be to disable security *cry*.