This plugin is real simple and basic, it doesn't allow anyone that does not have admin rights to access wp-admin. This will help ensure security.
Change your admin username to whatever you like. Improve your site security and make life difficult for the hackers.
Integrates SpamCaptcher anti-spam methods with WordPress including comment and registration spam protection.
Helps adding a precise Safe Harbor compliant, CRM alike Double Opt Contact Form to User's profile.
Displays the status of WP_DEBUG, DISALLOW_FILE_EDIT, and DISALLOW_FILE_MODS in the Toolbar.
PHPIDS for WordPress
A SMALL popup with customizable message about the avaliablity of a free OS replacement for Windows, and Mac.
Jumpple protects your website against technical, content or any other issues that may occur.
WordPress Security Plugin to protect you from Hackers. Easily create Custom Login URL, Change Admin User, Custom Hack/Ban Settings, & much more.
A plugin to implement Vasco's MYDIGIPASS.com two-factor authentication service into your blog.
2StepAuth increases security of WordPress blogs by adding 2nd level of Authentication. Keeps your blog secure from hackers.
This plugin adds support for logging into WordPress using TrustAuth.
Implement and have full control over a captcha field for your Gravity Forms
Monitor files under your WP installation for changes. When a change occurs, be notified via email. This plugin is a fork of WordPress File Monitor.
Automatically start monitoring your sites uptime and check for hacks/malware from multiple Verelo global locations on a 5 minute rotational schedule.
Lock down all your posts and pages so only members can access them
Limit rate of login attempts, including by way of cookies, for each IP. Fully customizable.
InWebo strong authentication plugin for WordPress
Prevents 32-bit PHP versions from hanging when processing a request containing 2.2250738585072011e-308 value.
This plugin will check for a user named 'admin' and prompt the user to create a new account.
Members Category is an add-in for WP-Members™ plugin that restricts specified categories to registered users.
Stable Tag 0.3 Custom Post Type Privacy allows WordPress authors to grant access to users and groups of users across all posts, pages and custom post
MJP Security Tools is a plugin designed to fix a lot of WordPress security issues, as well as providing extra support.
HTML Purified replaces the default comments filters with the more secure HTML Purifier.
Foresight makes it easier for a WordPress administrator to stay up-to-date on current WordPress exploits.
The plugin creates MD5 hash from every file in your blog.
Sabre is an acronym for Simple Anti Bot Registration Engine. It's a set of counter measures against spam registration on your blog.
Restrict your blog to a specific list of Facebook users.
3D objects-based CAPTCHA to get rid of spam in comments.