Spam Clinic - Virus spamming my contact list
A few weeks ago, one of my friends said he had gotten spam from me. Sure enough, I apparently spammed 5 or 6 people in my contact list. I did a virus/maleware check and didn't find anything. I did change my email password and now it happened again today. It spammed different people in my contact list. Plus, nothing shows up in my sent folder. I only knew because I was one of the recepients of the spam. What else should I do to stop this? The email effected is my hotmail account.
Any suggestions would be appreciated.