So let us say I go to some page which lists some "potentially well off" folks, like this one: https://github.com/orgs/google/people https://github.com/orgs/goo

So let us say I go to some page which lists some "potentially well off" folks, like this one: https://github.com/orgs/google/people https://github.com/orgs/google/people or this: https://github.com/orgs/microsoft/people https://github.com/orgs/microsoft/people or even this :-) https://github.com/orgs/facebook/people https://github.com/orgs/facebook/people Given GitHub actually even provides a convenient, public, unauthenticated API, it makes it even more easy: https://api.github.com/orgs/facebook/public_members https://api.github.com/orgs/facebook/public_members And then I match it with their personal phone numbers in the dataset (apparently its now offline, but maybe another one will reappear at some point). And then I can just call these phone numbers and sell them stuff? And its perfectly OK because even if a dataset like this goes into the wild it acts as nothing more than "just a phone book"?