Conspiracy theorist might call this one as plausible deniability.

From The Next Web:

Fox has found it has been made the target of a hacking campaign once again after attackers managed to compromise the Fox News Politics Twitter account and used it to spread misinformation that the president had been shot and killed.

We managed to get a screen grab of the twitter account:

Posted from Los Angeles, California, United States.

Tuesday January 06, 2009 01:29 PM EST
Written by arn
Our MacRumorsLive keynote coverage was hacked today, inserting inappropriate content into the text and photo feeds. We apologize for the inconvenience and are working to restore our services. The hack appears to be limited to the MacRumorsLive servers so forum accounts should be safe.

We’ll continue Macworld Expo coverage on an ongoing basis this week, and will report on Apple’s announcements shortly.

Reddit shows how MacRumorsLive got hacked.

m.atthew.net has made a statement: “I did not hack macrumors”

Another (long) Screenshot (found through Digg)

During Phil Schiller’s MacWorld San Francisco 2009, MacRumorsLive.com was hacked. MacRumors shut down the page minutes after. A line that said “Steve Jobs just died” was inserted into the feed. One message also carried 4CHAN.ORG badge.

Check the screenshot out.