Arm in arm on the Champs Elysées, in shorts and a baseball cap, four American Secret Service (USSS) agents take a photo on the world's most beautiful avenue. They are in Paris to provide security for First Lady Jill Biden, who will represent the United States at the opening ceremony of the Olympic Games. But these agents are posting more than just tourist photos online.

They are all regular users of the sports social media app Strava. Using their phones or smartwatches, they record their running sessions and share them on the platform. They're not only sharing their performance, however; with each run, they reveal their geolocations to the world. In other words, they are unknowingly communicating their movements, including when on business.

Just a few clicks

And that's not all: In just a few clicks, we found out almost everything about the bodyguards' private lives thanks to their Strava profiles.

For example, Dan (all first names have been changed) was a USSS agent under the Obama and Trump presidencies and is currently one for Biden. Through Strava, we found he likes to stay in the Rockies, where he's gone for the past eight years. Other agents aren't afraid to share photos of themselves with their families at the White House, like John, who proudly stood next to his wife and three daughters there for Easter. Of the 26 agents we identified, we were easily able to find the private home addresses of 12 of them.

Watch episode 2 of the StravaLeaks investigation: 'The White House'

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