- you do not enter your phone number (or email). You just search yourself (or your close ones) by name, the same way you would Google or Facebook yourself or your friends.
- even if that shouldn't be the only trust signal, we (the folks at NextDNS) work around security and privacy every day for the benefits of the users. And while we are still a startup, we are used by many, including experts in the security industry.
We try to shine a light on the implications of this on the website itself (you may need to scroll down a bit).
Short term, just being aware of it should make things better, as there is going to be a massive surge in phishing and other types of attacks.