Threats in space (or rather, on Earth): internet-exposed GNSS receivers

What is GNSS? Global Navigation Satellite Systems GNSS are collections, or constellations of satellite positioning systems. There are several GNSSs launched by different countries currently in operation: GPS US, GLONASS Russia, Galileo EU, BeiDou Navigation Satellite System BDS, China, Navigation...

A common GPS satellite positioning platform vulnerability disaster the user's location information in an emergency-vulnerability warning-the black bar safety net

Recently, in the news of the exposure of the many by the GPS positioning device, tracking the abduction of the event http://news.xinhuanet.com/legal/2015-11/15/c1284295262.htm in. Many users have to consult, there is no method for detecting it? So in the market to buy some GPS positioning...