Today i received an email(together with 33 other email and turn out 28 of them r infected with sobig-f-as detected by avast)) from trendmicro IT-Support stating that they received an email with attachment which is infected with the famous sobig-f virus from me, i am 100% sure i did not send that email. Imediately i thought my system might be infected with this virus, By the way, i'm currently using avast 4 Free version anti-virus with the latest virus definition file,
i did a through scan and found nothing and i also download the latest avast virus scanner tool to scan also found nothing, checked my registry also did not find the registry entry entered by this virus. Next thing come to my mind is- if someone who is infected with this virus, and have my email address in his/her addressbook, will this virus use my email address as sender to other people?