belinde

Protect folders and files from unhautorized changes managing filesystem permissions. You can configure the permission mask for file and folders in “protected” and “writeable” status, and with a single click you can switch between them. When you enable writing a cron event is set and the protected status will be applied automatically after 10 minutes.
Please check carefully the configuration before enabling protection! If the default permission mask isn’t correct for your server WordPress will stop working, and you’ll need to restore the correct permission manually.
Pay attention: the suggested configuration is, obviously, only a suggestion: depending on various system configuration the detection could be suboptimal or erroneous.
New in 0.5: automatic updates should work regularly; the protection will disabled and re-enabled, hopefully without pain. But this feature is still experimental and I can’t debug it untill next minor release of WP.

AutoCHMOD

Protect folders and files from unhautorized changes managing filesystem permissions.

Acunetix

Acunetix Secure WordPress plugin is a free and comprehensive security tool that helps you secure your WordPress 
installation and suggests corrective measures for: securing file permissions, security of the database, version hiding, 
WordPress admin protection and lots more.
Acunetix Secure WordPress checks your WordPress website/blog for security vulnerabilities and suggests corrective actions such as:
<ol>
<li>Passwords</li>
<li>File permissions</li>
<li>Database security</li>
<li>Version hiding</li>
<li>WordPress admin protection/security</li>
<li>Removes WP Generator META tag from core code</li>
</ol>
<h4>Requirements</h4>
<ul>
<li>WordPress version 3.0 and higher</li>
<li>PHP5 (tested with PHP Interpreter >= 5.2.9)</li>
</ul>
For more information on the Acunetix WP Security plug-in and other WordPress security news, visit the 
<a href="http://www.acunetix.com/blog/" rel="nofollow ugc">Acunetix Blog</a> and join 
our <a href="http://www.facebook.com/Acunetix" rel="nofollow ugc">Facebook</a> page. Post any questions or feedback 
on the <a href="https://wordpress.org/support/plugin/secure-wordpress" rel="ugc">Acunetix Secure WordPress plug-in forum</a>.
<h4>Key security features:</h4>
<ul>
<li>Easy backup of WordPress database for disaster recovery</li>
<li>Removal of error-information on login-page</li>
<li>Addition of index.php to the wp-content, wp-content/plugins, wp-content/themes and wp-content/uploads directories to prevent directory listings</li>
<li>Removal of wp-version, except in admin-area</li>
<li>Removal of Really Simple Discovery meta tag</li>
<li>Removal of Windows Live Writer meta tag</li>
<li>Removal of core update information for non-admins</li>
<li>Removal of plugin-update information for non-admins</li>
<li>Removal of theme-update information for non-admins (only WP 2.8 and higher)</li>
<li>Hiding of wp-version in backend-dashboard for non-admins</li>
<li>Removal of version in URLs from scripts and stylesheets only on frontend</li>
<li>Reporting of security overview after WordPress blog is scanned</li>
<li>Reporting of file permissions following security checks</li>
<li>Live traffic tool to monitor your website activity in real time</li>
<li>Integrated tool to change the database prefix</li>
<li>Disabling of database error reporting (if enabled)</li>
<li>Disabling of PHP error reporting</li>
</ul>
For more information on the Acunetix Secure WordPress plug-in and other WordPress security news, visit the 
<a href="http://www.acunetix.com/blog/" rel="nofollow ugc">Acunetix Blog</a> and join 
our <a href="http://www.facebook.com/Acunetix" rel="nofollow ugc">Facebook</a> page. Post any questions or feedback 
on the <a href="https://wordpress.org/support/plugin/secure-wordpress" rel="ugc">Acunetix Secure WordPress plug-in forum</a>.
<h3>WordPress Security</h3>
Security Scanner:
<ol>
<li>Scans WordPress installation for file/directory permissions vulnerabilites</li>
<li>Recommends corrective actions</li>
<li>Scans for general security vulnerabilities</li>
</ol>
For more information on the Acunetix Secure WordPress plug-in and other WordPress security news, visit the 
<a href="http://www.acunetix.com/blog/" rel="nofollow ugc">Acunetix Blog</a> and join 
our <a href="http://www.facebook.com/Acunetix" rel="nofollow ugc">Facebook</a> page. Post any questions or feedback 
on the <a href="https://wordpress.org/support/plugin/secure-wordpress" rel="ugc">Acunetix Secure WordPress plug-in forum</a>.= License = 
Good news, this plugin is free for everyone! Since it’s released under the GPL, you can use it free of charge on your personal or commercial blog.
For more information on the Acunetix Secure WordPress plug-in and other WordPress security news, visit the 
<a href="http://www.acunetix.com/blog/" rel="nofollow ugc">Acunetix Blog</a> and join 
our <a href="http://www.facebook.com/Acunetix" rel="nofollow ugc">Facebook</a> page. Post any questions or feedback 
on the <a href="https://wordpress.org/support/plugin/secure-wordpress" rel="ugc">Acunetix Secure WordPress plug-in forum</a>.

Acunetix Secure WordPress

Scans your WordPress installation for security vulnerabilities.

AutoCHMOD vs Acunetix Secure WordPress