Strava’s fitness heatmap has a major security problem for the military

Strava, a fitness tracking platform that logs activities on Fitbits, Jawbones and Garmin wearable devices, has a security problem.

In November, the platform launched a global heatmap of all the activity recorded through the tracking service. While it's not live, it's gathered a lot of data about user activity, patterns, routines, and locations — and it appears to be exposing some military secrets.