[anfedorov]

I'm a quasi-active user and never realized my updates were public beyond the people who followed me. It has absolutely no UI indicating it the way, e.g. Facebook does, and does not show me any activity of people whom I do not follow.

Doesn't look like they're actually public, though? https://www.strava.com/athletes/22230419

[TallGuyShort]

Updates are effectively public because once they're collected by a third-party and / or shared with anyone, it's now out of your control. But my understanding (in which I'm not certain) is that the controversy is the heatmap feature, and that your name wouldn't show up in this proof-of-concept attack unless you had opted into that specific feature.

[anfedorov]

I get what the controversy is about, but I don't get how this is OK from Strava's PoV — none of my runs are "public" in the sense that I think of it — they're not on the website that's my "profile" and they're not visible to people who are not following me in the app...

[jcdavis]

I'm assuming you're looking from another browser, in which case if you are logged out you cannot. However I, a random logged in strava user, can see at least some of your activities (Last Sept 3)

That is easy to change, but again there is the opt-int vs opt-out discussion.

[rypskar]

Have you looked at the segment records on your workout? I guess most of the people you get listed compared to you are not in your circle of followers