An investigation by French newspaper Le Monde found that the highly confidential movements of U.S. President Joe Biden, presidential rivals Donald Trump and Kamala Harris, and other world leaders can be easily tracked online through a fitness app that their bodyguards use.

But the U.S. Secret Service told the newspaper that it doesn’t believe the protection it provides was in any way compromised.

Le Monde found that some U.S. Secret Service agents use the Strava fitness app, including in recent weeks after two assassination attempts on Trump, in a video investigation released in French and in English. Strava is a fitness tracking app primarily used by runners and cyclists to record their activities and share their workouts with a community.