A Twitter account in the name of Rupert Murdoch's wife, Wendi Deng, has been exposed as a fake.
The couple both apparently began tweeting over the recent holiday period, but while the media mogul's account has been confirmed as the real deal, his wife's was set up by an impostor, a News International spokeswoman said.
A spokesman for Twitter said: "We don't comment on our verification process but can confirm that the @wendi_deng account was mistakenly verified for a short period of time. We apologise for the confusion this caused."
Since writing his first message on the microblogging site on December 31, the News Corporation chief has told his Twitter followers that his new year resolutions are to "try to maintain humility" and go on a diet.
He tweeted his wishes for a happy new year and said it would probably exceed expectations. "Happy 2012," he said. "May it be better than all experts predict. Has to be! Must change everything to create jobs for all, especially young."
The 80-year-old also sounded bored with his holiday, saying: "Back to work tomorrow. Enough idling!"
Posting under the name @rupertmurdoch, he has already attracted more than 90,000 followers.
Many had doubted the account's authenticity because he has generally tried to stay out of the spotlight as his media empire comes under increased scrutiny because of the phone hacking scandal.
He faced harsh questioning in Parliament last summer and may face additional questions from the Leveson Inquiry later this year but makes no mention of these troubles in his tweets.
The identity of the person behind the Wendi Deng account, @Wendi_Deng, is unknown but has attracted nearly 10,000 followers itself.