I back my blogs using a free plugin WP DB Backup up. I will always restore my blog if anything happens. I use WP Security Scan plugin that is free to scan my blog frequently and WordPress Firewall to block requests to clean hacked wordpress site.
Hackers don't have the power to come to a WordPress blog once you got all these lined original site up for your own security. You definitely can have a safe WordPress account that provides big bucks from affiliate marketing to you.
It's a WordPress plugin. They're drop dead simple to set up, have all the functions you need for a job such as this, and are relatively cheap, especially when compared to having to hire someone to have this done for you.
Black and whitelists pathological-looking phrases based on which area they appear within, in a page request. (unknown/numeric parameters vs. known post bodies, comment bodies, etc.).
But realize that online security is. Don't only be the type that is reactive, consider action to begin protecting i loved this yourself. Do not let Joe the Hacker make your life miserable and turn all that you've worked so hard.