I hate spam and not just because I'm vegan.

Someone or something is sending spam emails to all of the people in my address book. This is so annoying!!! I have no idea what to do. I've changed all of my passwords (good luck remembering them all sp). I'm a little freaked because how long is this going to go on?
I've received emails from friends who have told me they've received two or three such emails. So if anyone has dealt with this please let me know if there's anything I can do. I suspect there's not much I can do at this point.
If you received a junk mail from me, please accept my apologies.