Mastodawn

In 2018, Strava's global heatmap revealed the locations and layouts of secret military bases because soldiers were tracking their runs.

Fitness apps broadcast where you exercise, what routes you take, and what time you're usually there. If your profile is public, anyone can see your patterns.

Strava's default is public. Soldiers exposed military base layouts in 2018 because nobody changed it. Set your fitness profiles to private.

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Sam Bent

Strava, Garmin Connect, Apple Fitness, and Nike Run Club all have privacy settings buried in menus. Set profiles to private, disable activity sharing, and consider whether you need GPS tracking at all for workouts near your home.