WikiLeaks has released the first batch of hacked emails alleged to be Barack Obama's. The hacked files reveal Obama's personal email address in 2008, before he secured the US presidency was The leaked emails, which date back to 2008, show messages to and from Podesta and Obama, primarily discussing plans for the new administration.

WikiLeaks announced the latest leak on its Twitter account, while also promising more surprises in store for Democratic vice presidential candidate Tim Kaine and DNC interim chairperson Donna Brazile.

One of the leaked Obama emails reveals Podesta advising the president on an upcoming G-20 meeting with the then president George W Bush. The date stamp on the email reveals that it was sent by Podesta a mere 20 minutes before the election was called in favour of Obama.

The email features the advice of Podesta and others who suggested that Obama decline attending the meeting.

Podesta wrote in the mail, "I don't want to bug you today, but the memo pasted below concerns a possible invitation to the G-20 meeting on November 15. On the chance that President Bush would raise this with you tonight, I wanted you to be aware that it is the unanimous recommendation for your advisors that you NOT attend.

"Pros and Cons of Attending the Meeting An invitation to this meeting presents an especially sensitive instance of the larger set of issues related to our engagement with the Administration on the financial crisis throughout the transition (addressed in our earlier memo). We believe the risks associated with your attendance substantially outweigh any benefits of attendance."

The leaked data allegedly comes from hacked emails of Clinton campaign chief John Podesta. WikiLeaks is currently continuing to release fresh Podesta emails, with the latest release bringing up the total leaked batches of data to 13.