If you don’t subscribe to SmashingMagazine.com, then you should! The site is a jackpot of helpful tools, tips, and more all for the average blogger and advanced IT expert. I was scouring their archives and found a great tutorial 10 Useful WordPress Security Tweaks. I have used many of them, but not all. Just remember that before you ever do anything to your WordPress database files, ALWAYS MAKE BACKUPS.
Some of the steps are complex, a few made me quiver with apprehension a little. lol. I have had some bad experiences where I “lost” my blog from an errant file or coding. I always managed to recover the error, though. 
Of the security tips SmashingMagazine mentions, I’d say that protecting the wp-config.php file, blacklisting bots, protecting against script injections and malicious url requests are the most important. Preventing hotlinking is very important, too.
Of course, many folks have IT support to help them with this kind of stuff (even if it is in the form of a family member!), and sometimes your web host may assist you (if they are feeling very generous). But if you you have no idea what you are doing and are afraid you will mess up your WordPress database, and if you have no friend or family member to assist you, get some Computer IT support person to help you. Seriously. Vulnerable WordPress blogs are a threat to all of us. Hackers love to inject websites and blogs with malware, so that visitors’ computers become infected just by visiting your blog. The beauty of WordPress is that it can be secured pretty easily, and at little to no cost (unless you hire an IT expert).
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