We've just heard of another computer crime case where the suspect has taken the "virus did it" defense.

According to local UK media, 33-year old Mark Craney was found guilty on charges related to child porn. Craney admitted there were images of children on his computer, but claimed: "I have got a virus from Broadband."

We've seen this before...cases where the defense claims that either a virus or a trojan has somehow planted the incriminating evidence on the suspect's system.

Indeed, we've operated as an expert in two such court cases lately. Although "virus did it" sounds like a lame excuse, in one of these cases a virus actually really did have something to do with the evidence.