03/20/2026
If you are using an exercise tracking app, such as Strava, be aware that if you set your profile to public the whole world, literally, can track your patterns of life, including those who may be interested in you for malicious reasons.
Learn from this instance of a French sailor on board an aircraft carrier.
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Your Defense is Personal
On March 13, a sailor aboard France's nuclear aircraft carrier — the FS Charles de Gaulle — went for a morning jog on the ship's deck, logged it on Strava, and left his profile public. The GPS map attached to his 7km run showed the carrier's exact position in the eastern Mediterranean, in waters France hadn't publicly disclosed. Within hours, the image had been picked up by Le Monde and was spreading across the internet. One morning run. One public profile. Mission compromised.
This isn't a one-off. In 2018, Strava's global heatmap accidentally traced the perimeters of classified U.S. military bases in Syria and Afghanistan — bases the government had never acknowledged publicly. In 2024, journalists identified members of Macron's security detail by following their running routes. Each time the story breaks, defence departments issue new guidance, Strava updates its settings, and everyone moves on. Clearly not everyone got the memo.
For the rest of us, the lesson is less dramatic but still worth taking seriously. A public Strava profile can reveal your home address, your daily routine, and everywhere you run regularly — information that's more useful to the wrong person than most of us realise. Strava does have privacy controls, including activity defaults and a privacy zone feature that hides your home location, but none of it is switched on by default. Head to Settings → Privacy Controls and spend two minutes sorting it out. You're probably not hiding a warship, but your front door is worth protecting too.