Only Allow Administrators is a simple and useful plugin. Without Administrators user, nobody can't log in your WordPress dashboard.
OpenOTP plugin Enable two-factor authentication for your admins and/or users The plugin will transparently handle any OpenOTP Login Mode including, LD
Protect your worpdress with two-factor authentication based on face recognition service provided by FACE2.in. FACE2 provides a hosted face recognition
Monitors WEB connections to your admin area. The "security camera" in your Admin dashboard.
Tinfoil Hat provides extra privacy configuration for your blog.
A secure plug-in which helps you be away from being collected, brute force attack and so on, Based on SaFly Cloud API, Designed by SaFly.ORG™.
Adds a field for a One Time Password to WooCommerce's login form.
Easily add Acceptto multi factor authentication to your WordPress website. Enable multi factor authentication for your admins and/or users.
Secure Login using Voice Biometrics for your WordPress site.
Protect your WordPress site with Token2 two-factor authentication
Admin Protector plugin is useful to keep everyone can access into the admin menu.
Security against all current password hacking techniques and more....
A WordPress utility that can be used by itself or with an active subscription from http://mycodetree.com.
A plugin to implement Vasco's MYDIGIPASS.com two-factor authentication service into your blog.
This plugin allows users to sign into their WordPress accounts with the authentication service PrivaKey.
Spamify Guard self learning algorithm can detect evil spambot traffic on his own, and block it instantly.
Prevent users who aren't logged in from viewing your site. Whitelist selected content or IPs.
This is a WordPress plugin that confirm old password before changing to new password.
Covr two-factor authentication is the best way to securely log into your wordpress blog.
minotaur - Rid the internet of text CAPTCHAs!
Collects information to list information on appcastle.net for easy overview and updating of your own wordpress installations.
"Setup of roles" very simple plug-in for setup of roles and capabilities of users.
A must have all around security plugin for your website.
Fast and easy get users logged in on your web-site with bunch of OAuth providers like Google, Facebook, Twitter and more.
This is a plugin to autheticate users through the SecurePass One Time Passwords service.
This plugin allows you to log into your wordpress using the free https service from intosecure inc.
Displays a security alert when visiting the site with an Internet Explorer browser.
This plugin confirms to Passlogy Password Reminder whether you may login, when you login to wordpress.
Fresh Fast Website Security Plugin checks and adds additional security to the WordPress.
Link multiple network sites/blogs together - Maintain only one site list of users.