Today's tip is something you should always add to all your WordPress projects.
When you type a wrong password it tells you Hey, wrong password!. Also tells you when you just entered a wrong username.
The point is we can not let the bad guys know what are they writing wrong.
There is an easy solution. Add this line to your functions.php in your theme folder.
add_filter('login_errors',create_function('$a', "return 'Ops!';"));
You can also customize the error message 😉