[uncletammy]

> I have a feeling that Meta has some kind of internal system for slurping up everyone's contact info

Yes. It's called Facebook Messenger. All your friends have it installed on their phone and it has access to all the data in their phone's contact list, including anyone who might have saved it in the email field of their contact entry for you.

Right? Isn't this the oldest criticism of Facebook Messenger?

[Nextgrid]

Or WhatsApp for that matter, which has access to a lot more people's contacts, even those who might otherwise deny contacts permission to Facebook Messenger.

[nicce]

And people call me still crazy because I haven't given WhatsApp access to my contact list...

While I understant that it helps only a little since all my friends have given.

[Firmwarrior]

I learned my lesson about that the hard way back in the early 00s

I logged into LinkedIn, and it seemed like it was loading, but then the login failed and it prompted me to log in again. I tried and it didn't work, then looked more carefully.. and the second login prompt was actually a "Give us your e-mail login so we can scrape all your contacts and spam them" prompt.

Hoo boy, glad I was using separate passwords for everything