i'll say this... there are definately viruses out there... i know because i was playing faceoff 1V1 with a guy in CoD MW3 And was beating him... before he quit (so i couldn't report him for hacking)he told me he had planted a virus on my PS3 hard drive that would wreck my motherboard in 72 hours... after looking up info here online... i determined it wasn't a threat, 72 hours later my PS3 crashed, and won't even "safemode"