The U.S. government on March 17 advised satellite operators to put their guard up in the wake of a cyberattack that disrupted internet services in Europe provided by Viasat’s KA-SAT.

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Sandra Erwin writes about military space programs, policy, technology and the industry that supports this sector. She has covered the military, the Pentagon, Congress and the defense industry for nearly two decades as editor of NDIA’s National Defense...