Officials at the Pentagon and the State Department have ordered a tightening of procedures to prevent future leaks of secret and sensitive information like the one that resulted in a series of revelations by the activist website WikiLeaks. The Pentagon policy announced orders the deactivation of the write capability on all computers on the defense department's classified network and limits the number of computers that can be used to transfer data from the secret domain into the open. The orders require that two people be involved in any such move to ensure it has been properly authorized. Pentagon Spokesman Marine Corps Colonel David Lapan says the moves are designed to add formal procedures and technological controls to what largely has been a system based on trust.The Pentagon's moves come after the publication of a third collection of documents by WikiLeaks on Sunday. The first two installments were Pentagon documents. The latest involves a quarter of a million State Department diplomatic cables. They include revelations about Iran's nuclear and missile programs as well as Arab views on those and many other confidential bits of information. U.S. Secretary of State Hillary Clinton has been contacting her counterparts around the world to minimize embarrassment and damage to diplomatic relations. She said that she has also ordered on Monday for tightening of procedures and indicated she may limit the number of cables that are shared with the defence department where the leak occurred. Clinton said those responsible will be prosecuted.