cm 0 THE JOINT CHIEFS OF STAFF mom on 20318-9999 18 Aug 2009 1050 MEMORANDUM FOR Chiefs of the Military Services Commanders of the Combatant Commands Directors of the Joint Staff Directorates Subject De nition of Cybefsp'aoe Operations 1 On behalf of the Chaizmangof the Joint Chiefs of Staff effective immediately the Department of Defense use the following de nition of cyberspace cyberspace operations The employment of cybet capabilities where the primary is to objectives in or linug h Such Operations include computer network operations and activities to operate and defend the Global Nomination 2 The Joint Stat will incorporate this de nition into 1-02 Dictionary of Military and Associated Terms Additionally the Joint Will initiate approp ate joint doctrine changes in accordance with CJCSI Standardization of Military and Associated Terminology and 5120 02A Joint Doctrine Development System - - - r - JAMES E General United States Marine Corps Acting Chairman of the Joint Chiefs of Staff