To get into your site, an evil hacker or an automated bot must know your Username and password. All too often they will find your Username but they can’t do anything until they crack your password. And your password is strong isn’t it?
But let’s not make things too easy for hackers.
Hide your username
Navigate to Dashboard >> Users and click on your Username.
Remove the personal details.
Now you create a Nickname for yourself so that your username doesn’t show in your posts. Then check the box to display that name publicly.
(no, I’m not suggesting that you use FelixtheCat as your nickname but it’s certainly a lot more secure than using your actual username)