The Communications Industry is just one of many industries that have serious concerns over Cyber security issues related to hackers and possible damage to infrastructure from terrorist activities. One of the components of Cyber Security that is a critical piece of the communications infrastructure is GNSS vulnerability. GNSS (Global Navigation Satellite System) technology includes GPS (Global Positioning System, United States owned and operated) along with Global Satellite Navigation Systems operated by China (Beidu) and Russia (Glonass). These Global Navigation Systems are used to obtain an accurate position or location but are also used to deliver accurate timing that is distributed in communications networks for a variety of applications.

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