Its common to get a virus on your computer that will use your email to send out links (That contain viruses) to all those in your contact list.
If you don't clean if off your computer then it will keep trying to use your email and possibly other damaging things to your computer
I would suggest getting/using BitDefender, it is the best antivirus system I've found so far, or finding a free alternative.
Romans 8:31 What, then, shall we say in response to this? If God is for us, who can be against us?
1 Corinthians 13:1-3 If I speak in the tongues of men or of angels, but do not have love, I am only a resounding gong or a clanging cymbal. If I have the gift of prophecy and can fathom all mysteries and all knowledge, and if I have a faith that can move mountains, but do not have love, I am nothing. If I give all I possess to the poor and give over my body to hardship that I may boast, but do not have love, I gain nothing.