I've had two WordPress blogs. That was in a time when I was doing virtually no online marketing, and until I found time to deal with the situation (weeks later), these sites were penalized at the main search engines. They were not eliminated the evaluations were reduced.
Backing up your site regularly also assists in securing from fix wordpress malware virus hackers. You have to keep a copy of your files hide away in backup system that you can be certain of your database. This makes you a protected files that serves you in times of unexpected down is the system. Hackers are less likely to steal from a secured back up system.
Use strong passwords - Do what you can to use a password, alpha-numeric. Easy to remember passwords are also easy to guess!
Keep your WordPress Setup to date - One of the simplest and most valuable tasks you can do yourself is to make sure your WordPress installation is updated. WordPress gives a notice in your dashboard to you, so there's really no reason.
Now we're getting into things specific to WordPress. Whenever you install WordPress, you have to check my blog edit the file config-sample.php and rename it to config.php. You want to install the database information there.
Just ensure you decide on important source a plugin that's up to date with the current version and release of WordPress, and that you can schedule, restore and clone.