Kim Kardashian I've Been Twitjacked!

2/22/2011 4:10 PM PST BY TMZ STAFF
Kim Kardashian claims her Twitter account has been hacked by a cunning genius -- who even went so far as to tweet a fake "all clear" message with her account.

Kim says the "hacker" somehow blocked Kim from logging in from her home computer -- though she can still post messages from her cell phone.

So far, the mystery culprit hasn't posted anything malicious ... except for a message asking people to watch "Kourtney and Kim Take New York."

Oh wait, that one was real.