Todd Humphreys

Photo: Official SpaceX Photos

October 31, 2022

Starlink signals can be reverse-engineered to work like GPS

By Tracy Cozzens

This heat map shows GPS spoofing at a government complex in Tehran,which houses the Ministry of Defense, Communication Regulatory Authority, Telecommunications Infrastructure Company, and Ministry of Telecommunications and Technology. (Screenshot: Dana Goward)

April 21, 2020

GPS circle spoofing discovered in Iran

Image: Skytruth

December 17, 2019

Chinese GPS spoofing circles could hide Iran oil shipments

October 30, 2019

U.S. Army partners with UT Austin, Texas A&M System for advanced PNT

Cover: Crows.org

April 2, 2019

Russia practices widespread spoofing

By Alan Cameron

June 28, 2016

How worried are you hackers will discover our locations?

By Alan Cameron

photo: Kenneth M. Pesyna, Jr., Robert W. Heath, Jr. and Todd E. Humphreys

February 2, 2015

ION Announces 2015 Award Winners, Fellows

By GPS World Staff

photo: Kenneth M. Pesyna, Jr., Robert W. Heath, Jr. and Todd E. Humphreys

February 2, 2015

Accuracy in the Palm of Your Hand

By GPS World Staff

December 1, 2012

Directions 2013: The Future of GNSS Security

By GPS World Staff

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