Some people may not want to list any information publicly. Even if they have no activity listed they could still be valid. E.g. someone that reads posts without commenting.
Also if you do find a spam user such as someone that spams in comments, you can report the comment as spam, and even the user more generally.
For further actions, you may consider blocking this person and/or reporting abuse
We're a place where coders share, stay up-to-date and grow their careers.
Some people may not want to list any information publicly. Even if they have no activity listed they could still be valid. E.g. someone that reads posts without commenting.
Also if you do find a spam user such as someone that spams in comments, you can report the comment as spam, and even the user more generally.