Matt Cutts recently wrote a post giving four good tips to protect a WordPress blog. Try these tips if you own a WordPress blog.

1. Secure your /wp-admin/ directory - lock down your wp-admin folder so that only certain IP addresses can access that directory
2. Make an empty wp-content/plugins/index.html file - it helps prevent people from finding out which plugins you use. If you use an outdated plugin, someone could hack your blog by exploiting a bug. To prevent people from viewing which plugins you have installed, just create a blank index.html file and upload it to your plugins folder.
3. Subscribe to the WordPress Development blog - you could subscribe to the development blog to be alerted as soon as a new WordPress version is released. Upgrade your WordPress blog as soon as possible or it could be hacked. I haven’t subscribed as we already get notified of a new WordPress version from the dashboard.
4. Hide your WordPress version: by default, WordPress theme’s have a line in the header.php to display the current version of WordPress you use (can be found by viewing source). Since anyone can find your WordPress version this way, your blog is prone to hackers until you upgrade to the latest version. To prevent displaying your WordPress version, just open your theme’s header.php file and look for the following line.

<meta name=”generator” content=”WordPress <?php bloginfo(’version’); ?>” />

 and replace it with

<meta content=”WordPress” name=”generator” />

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