You can purchase security plugins for your WordPress blog. There are lots of safety plugins out there that promises optimum security for your blog. One is called fix wordpress malware cleanup Scan. The system is continuously scanned by this plugin for improving the security. So that new hackers can't penetrate the system, it also updates the safety.
You can look for software that will backup your database and files. It is easy to restore your website by means of your files and change if hackers abruptly hack your website.
Yes, you want to do regular backups of your website. I recommend at least a weekly database backup and a monthly "full" backup. More, if possible. If you make additions and changes definitely more. If you make changes multiple special info times every day, or have a community of people which are in there all the time, a daily backup should be a minimum.
WordPress is one of the platforms for sites and self-hosted blogs. While WordPress is pretty secure out of the box, there are always going to be people who from this source want to create trouble by finding a way to crack into accounts or sites to cause harm or inject hidden spammy links. That's why it's essential to make certain that your WordPress installation is as safe as possible.
Change admin username and your WordPress password, or at least your password, often and collect and utilize other good WordPress safety tips to keep hackers out!