# \#encryption

**URL:** https://forum.landoffset.com/tag/encryption/480.md

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## [The Empty Field That Wasn't: GPS, OTAD and Two Decades of Encrypted Broadcasts](https://forum.landoffset.com/t/the-empty-field-that-wasnt-gps-otad-and-two-decades-of-encrypted-broadcasts/409)

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**Author:** [@system](https://forum.landoffset.com/u/system)\
**Replies:** 0\
**Last updated:** [June 21, 2026, 12:35pm UTC](https://forum.landoffset.com/t/the-empty-field-that-wasnt-gps-otad-and-two-decades-of-encrypted-broadcasts/409 "2026-06-21T12:35:40Z")

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The Empty Field That Wasn’t: GPS, OTAD and Two Decades of Encrypted Broadcasts Research published in the May/June 2026 issue of Inside GNSS by Steven J. Murdoch, a Professor of Security Engineering at University College …