engine - 11:06 am on Jan 16, 2010 (gmt 0)

Yahoo knew of attacks before Google [reuters.com]

Yahoo Inc knew it had been a target to sophisticated Chinese cyber attacks on U.S. corporations before Google alerted the company to them, a source familiar with the matter said, but chose to remain silent after its bigger rival went public.

Google got in touch with Yahoo "to share knowledge" -- after determining through its own investigations that Yahoo had also fallen victim to cyber attacks -- and Yahoo then confirmed to Google it "was already aware of similar issues on their side," the person said on condition of anonymity.