Obama confidant Ben Rhodes is the Stuxnet leaker.

In the summer of 2012, Joseph issued multiple tweets under his @natsecwonk account suggesting that Rhodes was the source of classified information leaked to the press about the Stuxnet virus, a joint U.S.-Israeli cyber warfare effort to sabotage Iran’s nuclear centrifuge program. Joseph, as an official in the non-proliferation bureau of the State Department and later inside the White House, was part of the administration’s team working on the Iranian nuclear issue.

I suspect Rhodes did it under orders.  Remember, it make Obama look good.