Servers at The Washington Post were hacked today, the newspaper announced, giving hackers access to employee user names and passwords. WaPo is not yet aware of the extent to which its data has been compromised, but says theres no evidence that subscriber information or employees personal information (social security numbers, for instance) were accessed. What there is evidence of, WaPo says, is that Chinese hackers were responsible, much like the attacks against the New York Times, the Wall Street Journal and Bloomberg News. The most recent hack, WaPo said, originated in a server used by the Posts foreign staff. It is believed that hackers only had access for a relatively short time — a few days at most.