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Yahoo!, July - Major Security Breaches

Slideshow: Top Ten Major Security Breaches of 2012
Yahoo!, July - Major Security Breaches

A hacker group called D33DS accessed and shared as many as 450,000 user names and passwords stolen from a poorly-encrypted list at Yahoo! Voices, a user-generated content site that Yahoo! bought in 2010 (formerly known as Associated Content). Though the breach happened at Yahoo!, Google, AOL and Microsoft email accounts were also among the list. Further analysis revealed that 138,000 of the compromised accounts were Yahoo! e-mail addresses, 107,000 were Gmail accounts, 55,000 were Hotmail and 26,000 belonged to AOL users.

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