A Twitter account under the name Rupert Murdoch does belong to the media mogul and not an impostor, it has been confirmed.

Someone using the media mogul's name started tweeting over the New Year holiday and a spokeswoman at his News International company has confirmed the account is genuine.

The embattled chief of the sprawling News Corporation media conglomerate says on Twitter that his resolutions for 2012 are to "try to maintain humility" and go on a diet.

The 80-year-old added that he wants to stay curious. He also sounds bored with his holiday, saying: "Back to work tomorrow. Enough idling!"

Murdoch may face questioning in the UK later this year from the Leveson Inquiry, which is investigating media ethics in the wake of the phone hacking scandal that saw the News of the World shut down.

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