Yahoo says it has fixed the vulnerability that allowed 450,000 user email addresses and passwords to be stolen from its user-generated content service, Yahoo! Voices. In a blog posting, Yahoo said 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 the Yahoo! Contributor Network.) This compromised file was a standalone file that was not used to grant access to Yahoo! systems and services."