I've had two WordPress blogs. That was at a time when I was doing virtually no online marketing, and until I found time to handle the situation (weeks later), these sites were penalized in the major search engines. They weren't eliminated the evaluations were reduced.
Finally, secure your wordpress site will tell you that there is not any htaccess from the wp-admin/ directory. You may put a.htaccess file within this directory if you wish, and you can use it to control access from IP address to the directory or address range. Details of how to do that are available on the internet.
You can search for software that will backup your database and files. It is easy to restore your website by means of your backup files and change, if hackers suddenly hack your website.
You need to create a user with administrator rights before you can delete the default admin account. To do this go to your WordPress Dashboard and click on User -> Create New User. Then enter all the information you will need to enter.
Note that this last step for Get More Info new installations should only try. If you might like to do it you will also need to change the table names within the database.
Bear in mind the safety of your sites depend on how you handle them. Make sure that you follow these tips that are basic to prevent exploits and hacks on websites and your own blogs.