I've had two WordPress blogs. That was in a time when I was doing almost no internet 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.
You can purchase security plugins . There are many safety plugins out there that promises optimum security for your blog. One is known as secure your wordpress site Scan. The system is continuously scanned by this plugin for improving the safety. That new hackers can't penetrate the system, it also updates the security.
Strong passwords - Do what you can to use a strong password, alpha-numeric. Easy to remember passwords are also easy to guess!
Yes, explanation 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 changes and additions to your site, definitely more. If you 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.
As I (our fictitious Joe the Hacker) understand, people have far too many usernames and passwords to remember. You've got Twitter, Facebook, your online banking, LinkedIn, two blog logins, FTP, internet hosting, etc. accounts that all include logins and passwords you need to remember.
I prefer using click this site a WordPress plugin to get the work done. Just make sure is able to do copies, has restore performance, and can replicate. Also be sure that it is frequently updated to keep pace with all new versions of WordPress. There's absolutely no use in backing your data up and not functioning.