President Donald J. Trump signed National Security Presidential Memorandum 12 on June 12, giving the National Security Agency director a formal lead role in cybersecurity governance for America's National Security Systems, the government's most sensitive networks.
The directive targets National Security Systems, or NSS — the networks that handle classified information and support military and intelligence operations across the US government. These systems have not undergone a major governance review in more than 35 years, according to the White House.
Under the memorandum, the NSA Director becomes the National Manager for NSS, with authority to deploy the agency's full technical resources to bolster cybersecurity across civilian agency, military and intelligence-related National Security Systems.
The directive also reestablishes the Committee on National Security Systems (CNSS) with stronger powers. The CNSS can now issue binding security directives to all NSS operators and coordinate cybersecurity efforts across federal agencies, public-private partnerships, and international liaison activities.
A new Policy Coordination Committee will work alongside the CNSS to assess the cybersecurity posture of national security systems across agencies. The memorandum also promotes shared services in NSS and requires outdated cybersecurity requirements to be rescinded.
The updated framework aims to close gaps in cybersecurity defences by ensuring that systems operated by civilian agencies receive protections comparable to those maintained by military departments and the intelligence community.
The move builds on several cybersecurity actions taken by the Trump administration over the past year, including a June 2025 executive order on foreign cyber threats, a memorandum on artificial intelligence within the National Security Enterprise, and a separate June 2026 executive order advancing AI innovation for cybersecurity.
US officials have flagged an increase in attempted intrusions by foreign actors targeting government networks, and the directive explicitly includes international liaison coordination as part of its mandate.
The effectiveness of the new framework will depend on implementation, sustained funding, and inter-agency cooperation to enforce the binding security directives issued by the CNSS.
Sources: whitehouse.gov
