Black Echo

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NSA-Approved Encryption and the Battle Over Privacy

NSA-approved encryption has never meant just one thing. At different times it has meant federally standardized encryption, export-licensed commercial encryption, escrow-enabled government access, and high-assurance algorithms approved for national security systems. This entry explains why those meanings kept colliding with privacy.

Declassified / Nsa/historical record/2026-03-30
Articlewell-supported at the program and strategic leveBrowse result

BULLRUN Encryption Defeat Program

BULLRUN was one of the most consequential partially exposed programs in modern SIGINT history. This entry traces how the NSA and its British counterpart sought to preserve intelligence access in an age of expanding internet encryption, why the program was so secret, and how its public exposure reshaped trust in standards, products, and the wider security ecosystem.

Declassified / Nsa/declassified crypto defeat program/2026-03-29