NSDD 113 Security of Communications Systems used by Key Government Officials

91113 TOP SECRET THE WHITE HOUSE WASHINGTON November 17, 1983 mos OBGRUT National Security Decision Directive Number 113 #24536 BY Cs NAPADATIA /17/17 SECURITY OF COMMUNICATIONS SYSTEMS USED BY KEY GOVERNMENT OFFICIALS Mobile and fixed communications systems used by key US Government officials in the Nation's capital and surrounding areas are especially vulnerable to intercept and, exploitation by foreign intelligence services. Information transmitted over such systems often is extremely sensitive. Even information which in isolation is unclassified can reveal highly sensitive classified information when taken in aggregate. To limit this aspect of the hostile intelligence threat, I direct immediate action be taken to provide sécure mobile and fixed official telecommunications systems to support the US Government offi- cials in the following categories. (IS) - Presidential and Vice Presidential communications. - Cabinet members. - Other officials in line of succession to the President. - Other officials in line of succession to a Cabinet member. - Other senior officials of the Executive Branch as designated by the Assistant to the President for National Security Affairs, whose responsibilities are such that they require a direct and immediate communications capability with the President, and the Vice President. fer First priority shall be given to securing mobile telephone systems and other communications systems in the Nation's capital area for such key officials. These shall be secured within six months of the date of this directive. Second priority shall be given to all other systems which support such key officials. These shall be secured as soon as possible, but in no case later than two years from the date of this directive. mon OECRET COPY OF 24 COPIES Declassify on: OADR TOP PEADET SEGRET