DHS S&T Releases New Tool to Strengthen Global Navigation Satellite Systems for Critical Infrastructure

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June 4, 2025 | Originally published by Department of Homeland Security (DHS) on May 19, 2025

WASHINGTON – The Department of Homeland Security (DHS) Science and Technology Directorate (S&T) launched an important new resource on GitHub to help safeguard critical infrastructure:  the Global Navigation Satellite System (GNSS) Test Vector Suite and Distribution Methodology. This effort supports Executive Order 13905, which aims to protect essential Positioning, Navigation and Timing (PNT) systems used in industries like energy, transportation, and telecommunications.

PNT systems rely on accurate GNSS signals to function properly. If these signals are disrupted – whether by natural events, technical failures, or cyber threats – critical services could be impacted. To address this risk, the GNSS Test Vector Suite and Distribution Methodology provides critical infrastructure owners and operators the tools to independently identify and define appropriate test scenarios that support standards conformity assessments, to help evaluate and improve the resilience of their systems.

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