Daily Beast 
October 24, 2013
Jofi Joseph, the National Security Council official fired last week for Tweeting secretly under the moniker @natsecwonk, had publicly, albeit anonymously, accused a senior White House official of leaking classified information related to United States intelligence operations against Iran.
Joseph, who was outed in a report Tuesday in The Daily Beast , criticized and insulted dozens of Obama administration officials, lawmakers, Capitol Hill staffers, and journalists during his two-year stint on social media. But his number-one target was Deputy National Security Advisor for Communications Ben Rhodes, a senior official close to President Obama. Rhodes worked for the same department as Joseph, albeit at a much higher level.
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.
On June 14, just days after the FBI began a probe into the leak  and the Senate Intelligence Committee started planning public hearings on the matter, Joseph, posing as @natsecwonk, pointed the finger at Rhodes.