I back my blogs using a free plugin WP DB Backup up. If anything happens I can always restore my blog. I use my site to be scanned by WP Security Scan plugin that is free regularly and suspicious-looking asks to be blocked by WordPress Firewall to fix wordpress malware removal.
No software system is resistant to bugs and vulnerabilities. Security holes will be found and bad guys will do their best to exploit them. Keeping your software up-to-date is a fantastic way because reliable software sellers will fix their products once security holes are found.
Is to delete the default administrator account. This is important because if you do not do it, malicious user know a user name that they could try to crack.
You can even get an SSL Encyption Security to your WordPress blogs. The SSL Security makes secure and encrypted communications with your blog. You may keep history of communication and the all the cookies so that all transactions are listed. Be certain all your blogs get SSL security for maximum protection from hackers.
Oh . And incidentally, I talked about plugins. Make sure it's a safe one, when you get a read new plugin. Do not install any plugin because the owner is saying that plugin will help you do this or that. Use maybe, or a test site to look at the plugin get he said a software engineer to analyze it carefully. This way isn't a threat for you or your business.