CENTCOM's Twitter Hacked By ISIS?

Central Command has been hacked by ISIS, according to messages posted on CentCom's Twitter page:

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The hacker is claiming to be ISIS -- and claimg to have personal information of U.S. military personnel:

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UPDATE: It appears CENTCOM's YouTube account was also hacked:

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And more than half an hour later, the CENTCOM Twitter account appears to have been disabled.