America’s Military Has a GPS Problem

“The Department of Defense’s (DoD) Global Positioning System (GPS) is the principal source of positioning, navigation, and timing (PNT) information for the U.S. military and civilian users. Due to DoD’s reliance on it, GPS also represents a potential single point of failure for DoD. We [the Government Accountability Office (GAO)] previously reported on DoD’s efforts to modernize GPS with a more jam resistant, encrypted, military-specific signal, referred to as military code (M-code), and we foun

Source: The Cipher Brief