About a month ago, I started seeing some strange emails in my Hotmail account. They were your typical spam stuff with links and whatnot, but they were sent from me to people on my contact list, and a few had been bounced back. I looked in the Sent folder, and there were a bunch. I changed my password, and noticed that my vacation reply was on (I never turned it on) and set to send more spam stuff. At the same time, my Facebook, Pinterest, and Gmail accounts all gave me "We detected an unathorized login from such-and-such a place" or whatever when I tried to sign in. Changed all the passwords. My Pinterest had some spam pins, but I noticed nothing weird on the other two. Fast forward to this week. A couple people have been telling me that they've gotten weird website link spam emails from me, but I haven't found them in the Sent folder or the Deleted folder. So...any advice? Why this keeps happening? I am running an antivirus on my computer, but I'm not very savvy with that kind of thing, so I'm not sure how good it is. I also login to Facebook and Hotmail and whatnot from my phone and from school. I do a lot of online banking/financial stuff, but I watch that like a hawk, and haven't noticed anything. Thanks in advance!