President Obama has signed an executive order to tighten the government’s handling of classified secrets and prevent any future “Insider threat” incidents such as the 2010 WikiLeaks publication of damaging classified emails and war documents. Hundreds of thousands of sensitive and many embarrassing messages were released worldwide, and illegally, the president says, and his administration responded with a review and tightened procedures for handling secret information.

Among the changes the White House says are already in place: better verification of who is accessing specific areas of information and what kind of removable media are used. In the WikiLeaks case, Army Sgt. Bradley Manning remains in custody, accused of loading classified messages onto a CD that he had labeled as music by Lady Gaga.