I have had two WordPress blogs hacked into in the past. That was at a time when I was doing very little internet marketing, and until I found time to address the situation (months later), these sites were penalised in the search engines. They were not removed, but the rankings were reduced.
I back my blogs using a free plugin WP DB Backup up. I will restore my blog if anything happens. I use WP Security Scan plugin that is free to scan my blog regularly and WordPress Firewall to block requests to fix malware problems free.
You can look. If your website is hacked by hackers, it is easy to restore your website with the use of your files and change everything that must be changed.
You need to create a new 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. Enter all of the information you need to enter.
You can create a firewall that blocks hackers. From coming to your own files, the hacker is prevented by the firewall. You investigate this site also have to have version of Apache. Upgrade your PHP also. It is important that your system is always filled with upgrades.
Using a plugin for WordPress security makes sense. Backups need to be performed on a regular basis. Don't become a victim of not being proactive about your site as a result!