GALILEO'S FIRST CIVIL AUTHENTICATED POSITION FIX UNDER SPOOFING CONDITIONS

Summary from the TLDR InfoSec newsletter

Galileo has demonstrated its first real-world civil position fix using the upcoming Signal Authentication Service, holding a stable lock across five satellites during live spoofing at the Jammertest event in Andøya, Norway on September 16. SAS encrypts the E6-C ranging signal's spreading codes and publishes the decryption key on a delayed, separate channel, letting a receiver correlate the recorded signal only after the fact to confirm each satellite's pseudorange. It pairs with the already-operational OSNMA, which authenticates the navigation message itself. Both services will be free and worldwide, extend to the High Accuracy Service, and let receivers detect and reject a broad range of spoofing attacks. However, EUSPA still must run SAS validation and accreditation before declaring the service operational, and the delayed-key design leaves jamming and meaconing as open concerns.