Running data from the popular Polar Flow app could show sensitive military details. (Staff Sgt. Jason W. Fudge/Marine Corps) Military officials working at nuclear weapons facilities. FBI and NSA ...

Whether you’re using the Vantage V, its smaller sibling the Vantage M or something more meaty like the Grit X, Polar’s current crop of GPS sport watches and fitness trackers are smarter than ever – ...

Fitness tracking app Polar Flow allowed anyone with relatively little effort to work out the names, home addresses and daily movement routes of thousands of military and intelligence officials who ...