Concerns raised at the Pentagon after workout app's data published online

Strava, which links with wearable fitness devices and tracks users, said it was working with officials
1:32 | 01/30/18

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Transcript for Concerns raised at the Pentagon after workout app's data published online
We turn next here to news Ming in from the Pentagon, after reporting ifness apps are compromising security. Do they reveal where U.S. Forces are around the world? Some of the apps do share that data on publicly available maps. Are they releasing classified or sensitive locations? Tonight, defense secretary Jim Mattis now ordering a review, and here's ABC's Clayton Sandell. Reporter: It's the workout app that tonight has the U.S. Military exercising better privacy. The app called strava connects with wearable fitness devices like these. It tracks users, including some U.S. Troops, wherever they go. Afghanistan, Iraq and more. Now years of data published in this online map is becoming a security headache for the Pentagon. The real problem here is that these devices have revealed U.S. Personnel, special operations or intelligence personnel in countries that most people didn't know we are in. Reporter: The map went online in November, B was publicized over the weekend by 20-year-old Nathan ruser. It shows you which buildings the military personnel prefer. It can show you how military personnel like to get from one part of the base to another and even where they take their afternoon jogs which is something very valuable, if you are looking to target the base. Reporter: The military insists that ttoops were not compromised, but is not reminding fitness junkies worldwide to change their settings to private. And tonight, that app-maker says they are committed to working with government and military officials to try and address some of those sensitive areas.

This transcript has been automatically generated and may not be 100% accurate.

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