https://www.vice.com/en_us/article/xgza3w/dhs-believes-our-reliance-on-gps-poses-a-risk-to-national-security

America runs on GPS. A system of satellites in the sky, invented by the government and maintained by the U.S. military, help Americans navigate the planet. But it’s not the only satellite based tracking software on the planet and it’s also shockingly vulnerable. That’s the conclusion of a Department of Homeland Security (DHS) report from 2013 that was recently unearthed via a Freedom of Information Act Request and posted on Government Attic.

“In the short term, the risk to the nation is assessed to be manageable,” DHS said in its report. “However, if not addressed,this threat poses increasing risk to U.S. national, homeland, and economic security over the long term.”