Your private WhatsApp chat might be easily discoverable with a Google search February 21, 2020 https://www.androidauthority.com/private-whatsapp-1085998/ Motherboard / Vice: Google Is Letting People Find Invites to Some Private WhatsApp Groups
So what, no "robots.txt"? Edit: So yeah, now that I've read the article, that's it. I guess that Facebook really loves openness