Yahoo Takes Measures After Hackers Publish Passwords

Sunnyvale, Calif. -- Yahoo said on Friday it has undertaken several measures designed to minimize the damage caused when hackers published approximately 450,000 email addresses and passwords belonging to writers in its Yahoo Contributor Network. "We have taken swift action and have now fixed this vulnerability, deployed additional security measures for affected Yahoo users, enhanced our underlying security controls and are in the process of notifying affected users," the Sunnyvale-based company wrote in its blog. Yahoo said it learned of the security breach on Wednesday, adding that the compromised information was provided by writers who had joined Associated Content prior to May 2010, when it was acquired by Yahoo.  Associated Content is now known as the Yahoo Contributor Network.
http://ycorpblog.com/2012/07/13/yahoo-0713201/