I back up my blogs frequently using a free plugin WP DB Backup. If anything happens I can restore my blog to the settings. I use WP Security Scan free plugin to scan my blog and requests that are suspicious-looking to be blocked by WordPress Firewall to fix hacked wordpress.
Do not depend on your internet host - Many people depend on their web host to"do all that technical stuff for me", not realizing that sometimesthey don't! Far better to have the responsibility lie rather than out.
One thing you can take is to delete the default administrator account. This is important because if you don't do it, a user name that they could try to crack is known by malicious user.
You can get an SSL Encyption Security to your WordPress blogs. The SSL Security makes secure and encrypted communications with your site. You can keep history of communication and the all of the cookies so that all transactions are recorded. Be certain all your blogs get SSL security for try this site protection.
Just make sure that you may schedule, and you choose a plugin that's current with release and the current version of WordPress, restore and replicate.