I just today received this email:
Dear Yahoo Member,
Your e-mail account was used to send a huge amount of unsolicited spam messages during the recent week. If you could please take 5-10 minutes out of your online experience and confirm the attached document so you will not run into any future problems with the online service.
If you choose to ignore our request, you leave us no choice but to cancel your membership.
Virtually yours,
The Yahoo Support Team
I did not download the .zip attachment
account_info.zip and found out that it is
Worm.Sober.P 
Glad I didn't fall for it!
