I've been hacked!

At least two people have received emails form my address that were not sent by me. I'm frightened that everyone in my address book may have received similar emails. The email in question had no subject title, and contained a web link.

Unfortunately, until further notice, you should treat any email from me with suspension. I don't suppose there can be any harm in plain text, but any links should be ignored and any executable files attached should not be run. Any attachments should be scanned for viruses, and only opened if you feel confidant that they are safe, and that the security measures on your computer are adequate.

I hurts and embarrasses me to have to post this message. I have often heard of similar things happening to other people, and have felt rather smug, thinking my own security was adequate. The smug smile has been wiped from my face. As yet I have not been able to find the cause of the problem.

I would appreciate advice any of you may have to offer on this problem, and how to track down the cause, or cure it.

The email account in question is yahoo web based mail, accessed through FireFox v3.6.18, which has NoScript installed. I am running the ZoneAlarm fire wall and AV, and SpyBot Search & Destroy, under W2k sp4.

Sorry for any inconvenience this problem with my emails may have caused. :(

Les.