The U.S. Secret Service has transformed an older White House camera network into a searchable surveillance platform that combines facial recognition, license plate data and video analytics, according to a newly released Department of Homeland Security privacy assessment. The document provides the clearest public picture yet of HELIX, while leaving unanswered questions about who can be monitored, what data sources the system can access and how long information can ultimately be retained.
HELIX is not an entirely new system, though. Its lineage runs through Crown CCTV, the camera infrastructure used in a 2018 White House facial recognition pilot Biometric Update reported on at the time.
An April 2025 appendix to DHS’s department-wide surveillance camera privacy assessment identified “USSS HELIX, formerly operating as CROWN CCTV P3C,” more than a year before the agency published a dedicated HELIX assessment. The Secret Service has acknowledged that HELIX is not necessarily new but has not said when the transition occurred. That leaves an important question unanswered: when did the former Crown CCTV system become the integrated analytical platform DHS now describes?
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