Although popular social fitness app, Strava, takes steps to anonymous users' data, a new paper from researchers at NC State University claims that information such as home addresses might be vulnerable to leaks. The paper claims to raise "significant privacy concerns", particularly in relation to the Heatmap feature.
Strava claims that the heatmap features only use generic data, aggregated from a wider pool of information in order to make it impossible to get specifics about any particular user. The researchers, however, seem to have found a loophole.