Doxxing

[André Vasconcelos]

Doxxing (also doxing, but I have seen the first spelling more often) is the act of a person or a group of persons revealing someone's private information to the internet at large, usually with the intent of harassing this person or letting others do it. Disclosed information can include the identity of someone who wants to stay anonymous (i.e. someone writing under a pseudonym), their home address, their phone number, etc.

https://en.wikipedia.org/wiki/Doxing