[bartj3]

When you give your phone number to LinkedIn you're not surprised either if people will find your job title, photo and name based on your phone number right?

I'd think most people are pretty aware of how public the Whatsapp info is.

[sdoering]

If I ask the semi- and non-technical people within my rech, I find that the majority is shocked by the described possibility.

Sadly not shocked enough to even change the privacy settings. Or - beware - deleting WA.

[detstrat]

Why do people think "public" does not mean the same as "public" on a website? Essentially there is nothing different here..