You can buy security plugins for your WordPress blog. There are safety plugins out there that promises optimum security for your own blog. One is known as fix hacked wordpress site Scan. The system is continuously scanned by this plugin for enhancing the safety. So that my link the system can not be penetrated by new 9, it also updates the safety.
You can look for software that will backup your files and database. It is easy to restore your website by means of your files and change, if hackers abruptly hack your website.
For me it's a WordPress plugin. They are drop dead easy to install, have all the features you need for a job like this, and are relatively inexpensive, especially when compared to having to hire someone to get this done for you.
Black and pathological-looking phrases that were whitelists based on which field they look within. (unknown/numeric parameters vs. known post bodies, remark bodies, etc.).
But realize that online security is. Don't only be the type, consider steps to begin today protecting yourself. Do not let Joe the Hacker make your life miserable and turn all that you've worked hard.