President Donald Trump signed National Security Presidential Memorandum-12 (NSPM-12) to strengthen cybersecurity for U.S. National Security Systems (NSS), including highly sensitive systems used to process classified information and support military and intelligence missions. The memorandum sets updated governance, accountability, and baseline security requirements intended to ensure NSS operated by civilian agencies receive protections comparable to other federal systems.
The order reestablishes and modernizes the Committee on National Security Systems (CNSS), giving it authority to oversee NSS cybersecurity, issue binding and emergency directives, set minimum requirements, and improve coordination and information sharing across government. It also designates the NSA director as the National Manager for NSS and cryptologic authority, empowering the agency to provide technical guidance, recommend incident response actions, and take emergency measures based on intelligence about adversary threats, while requiring policy reviews within three months and annual agency inventories of NSS assets.

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The White House announced that President Donald J. Trump signed National Security Presidential Memorandum-12 to strengthen cybersecurity governance for U.S. National Security Systems. The memorandum reestablishes and modernizes the Committee on National Security Systems and empowers the NSA director as National Manager for NSS.
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