Hoe to disable author request?

In wordpress, when you hit url like the following:

http://www.example.com/?author=1

If the author ID is valid then they will be redirected to the author URL, for example:

http://www.example.com/author/username

Then the hacker start attacking the username. How could I disable (?auther=xx) query in url?
for example redirect the request to another page like http://www.example.com/404.php