If you have a Yahoo e-mail account it may have been hacked or compromised last night....
you can check you account by going to this site.....
http://www.pbs.org/newshour/rundown/2012/07/check-whether-your-yahoo-password-was-hacked.html (http://www.pbs.org/newshour/rundown/2012/07/check-whether-your-yahoo-password-was-hacked.html)