If I sign in to a virus free computer with a facebook account that has been hacked, does it become infected?

[RaNdOm]

I don't want to make this any more confusing for you than it is. The likely hood that your parents 'facebook' account had a virus is ZERO. Facebook itself is not infected, some jerk just uses facebook, myspace, or other social networks to spread viruses like koobface. The account could have been hack. Two different words with completely different meanings. Now, you parents computer could have a virus. In fact it might have a password stealing Trojan (also not a virus by definition), which would allow someone to hack their facebook. This being said, that best answer for you question is 'FISH' because there is no meaning to it. Like in normal mail, don't open mail that was sent to you by someone you don't know. it's up to you, you don't have to click on stuff that has a virus in it.