Through the use of a fix malware problem backup plugin, the best way to make sure that your is in my view. This is a fairly inexpensive, elegant and easy to use way to make sure that your website is accessible to you in the event of a disaster.
A simple way to keep WordPress safe is to use a few tools that are built-in. First of all, do not allow people to list the documents in your folders, run a web host security scan and automatically backup your whole web hosting account.
Yes, you want to do regular backups of your site. I recommend at least a weekly database backup and a monthly "full" backup. More, if possible. Definitely if you make additions and changes to your website. If you find more make changes multiple times every day, or have a community of people that are in there all the time, a backup should be a minimum.
Another step to take to make WordPress secure is to always upgrade WordPress to the latest version. The reason for this is that there come fixes for older security holes making it essential to update early.
Implementing all of the above will probably take less than an hour find out to finish, while making your WordPress look at these guys site more immune to intrusions. Over 1 million WordPress sites were cracked last year, largely due to preventable safety gaps. Have yourself prepared and you're likely to be on the safe side.