What can an attacker do if all my data on social networks, email. Is the mail and phone number open and accessible?

Question

Information Security

What can Vasya Pupkin do, knowing my email addresses, social media logins and phone number?
For all accounts, a crazy password like "_>> -D? passport contract.
Wherever possible, two-factor authentication is enabled.
All my data is openly available on the Internet to anyone who knows how to search a little.

Answer 1

Well, you might not be hacked.
However, such things are great for all sorts of social engineering variations. Both in relation to you (you can pretend to be old acquaintances, flashing a bunch of facts, usually unknown to strangers), and in relation to your relatives / acquaintances (who can also be easily found on the same social networks) [it’s easier with them].

Answer 2

> What can Vasya Pupkin do?
If, for example, you write something unpleasant to Vasya, not bothering with anonymity, then he can find out the address of residence or work, take an iron pipe, watch and hit you on the head, for example. Or take boxer friends, watch for you at the exit and beat you painfully. Or push onto the tracks in front of an oncoming train. In general, if a person is determined, he can do a lot of things.
And there was also a story, some crazy Chechen came to Switzerland and killed an air traffic controller after finding out where he lives.
Therefore, you should not post information about yourself on the network.

Answer 3

the model of the alleged intruder is not disclosed at all. Attackers are different.

Answer 4

Not quite on topic, though. Habrazhiteli for registration, for example, on Habré used their main email address (to communicate with real people) or did they use a separate mail for registrations?