Description

Duo Security provides two-factor authentication as a service to protect against account takeover and data theft. Using the Duo plugin you can easily add Duo two-factor authentication to your WordPress website in just a few minutes!

Rather than relying on a password alone, which can be phished or guessed, Duo’s authentication service adds a second layer of security to your WordPress accounts. Duo enables your admins or users to verify their identities using something they have—like their mobile phone or a hardware token—which provides strong authentication and dramatically enhances account security.

Duo is easy to setup and use. With Duo there’s no extra hardware or complicated software to install, just sign up for Duo’s service and install the plugin. Then you can set which user roles you want to enable two-factor authentication for—admins, editors, authors, contributors, and/or subscribers—without setting up user accounts, directory synchronization, servers, or hardware.

When they log in, your users have multiple ways they can authenticate, including:

One-tap authentication using Duo’s mobile app (our fastest, easiest way to authenticate)
One-time passcodes generated by Duo’s mobile app (works even with no cell coverage)
One-time passcodes delivered to any SMS-enabled phone (works even with no cell coverage)
Phone callback to any phone (mobile or landline!)
One-time passcodes generated by an OATH-compliant hardware token (if you’re feeling all old school)

Protect your WordPress website in minutes with Duo.

End of Support Notice

Support for the traditional Duo Prompt experience using the Duo WordPress plugin ended on September 30, 2024. Please use the new Duo Universal plugin for WordPress. Read more about the End of Suppport and migration to the new plugin on our Duo for WordPress – Duo Universal Prompt documentation page

Screenshots

Duo's WordPress plugin adds strong two-factor authentication to any WordPress login. Your users will log in as usual with their primary credentials (their WordPress username and password). Then they’ll be challenged to complete secondary authentication via Duo Push, phone callback, or one-time passcodes generated via the Duo Mobile app or delivered via SMS. — Duo’s WordPress plugin adds strong two-factor authentication to any WordPress login. Your users will log in as usual with their primary credentials (their WordPress username and password). Then they’ll be challenged to complete secondary authentication via Duo Push, phone callback, or one-time passcodes generated via the Duo Mobile app or delivered via SMS.

The Duo Mobile application allows users to generate passcodes or use Duo Push to perform secondary authentication using their mobile device. — Duo’s WordPress plugin adds strong two-factor authentication to any WordPress login. Your users will log in as usual with their primary credentials (their WordPress username and password). Then they’ll be challenged to complete secondary authentication via Duo Push, phone callback, or one-time passcodes generated via the Duo Mobile app or delivered via SMS.

Installation

Integrating Duo two-factor authentication with WordPress is a breeze. See our instructions at duo.com

FAQ

How do I get started with Duo?: Before installing the plugin, you’ll need to sign up for a free account at https://duo.com/.
Is Duo’s two-factor service really free?: Yes, Duo is free up to 10 users and no credit card is required to get started! Paid plans for more than 10 users start at only $1/user/month.
WordPress integration is great, but what if I want to protect my own web applications with two-factor?: If you’re interested in protecting other web applications with Duo’s two-factor authentication, check out all our online documentation to see all of our drop-in integrations and to access our APIs and web SDK.

Reviews

dsitechmktg January 26, 2024

Love having this plugin because it adds an excellent layer of much needed security

ChrisKnight January 29, 2023

This used to be an awesome plugin. It offered seamless integration with Duo, blocking admin access to my site in the case of a password compromise or brute force attack. Sadly, it recently just stopped working. No Duo verification page, no errors in the logs; and the only way to get back into my site was ssh in and delete the plugin. Duo has apparently given up on the plugin, according to their github repo.They should just pull this plugin from listings.

sotte December 12, 2022

Best 2FA addon for Wordpress – if it wasn't so neglected. No updates for half a year, no PHP 8. Too bad. Could have been so great. Now it's out.

chueyise June 4, 2022

I use Duo Security for many different apps and it works great. The negative reviews typically mean the person is not familiar with how to implement Duo Security correctly.

webdraco December 10, 2020

The configuration and integration was super easy and I am using this for my Office 365 and VPN access as well. It's great to be able to use a single MFA for multiple application.

techguysa September 14, 2020

Sure tiny bit of setting up to phone etc Works perfectly fine. the constant nagging up updates annoying but okay. Just wish on DUO site i can add my other administrator in without hassle

Read all 39 reviews

Contributors & Developers

“Duo Two-Factor Authentication” is open source software. The following people have contributed to this plugin.

Duo Security

Translate “Duo Two-Factor Authentication” into your language.

Interested in development?

Browse the code, check out the SVN repository, or subscribe to the development log by RSS.

Changelog

2.5.7

WordPress 5.6 support

2.5.6

Bug fixes

2.5.5

Bug fixes

2.5.4

Update Duo WebSDK to version 2.6

2.5.3

Update Duo-Web-v2.js

2.5.2

WordPress 4.5 support
Updated iframe style to be consistent with documentation

2.5.1

WordPress 4.4 support

2.5

Duo Web V2
Adaptive iframe
Duo PHP update
Bug fixes

2.4.1

WordPress 4.1 support

2.4

Fix an IE9 compatibility issue
WordPress 4.0 support
Add a plugin icon

2.3.1

Fix an issue that caused errors on some sites

2.3

Add support for WordPress 3.9
Update CA cert bundle
Send user-agent with API requests

2.2

Fix an issue that caused users to see ‘Access Denied’ when WordPress secret keys are not set correctly
Fix ‘Access Denied’ issue due to a plugin caching our old JavaScript file
Fix an issue that forced users to log in multiple times when going to a non-secure page from an SSL page
Minor fix for sites using a proxy

2.1

Fix an issue that caused 503 errors for some users
Add support for proxy servers
Fix an issue where the “Remember Me” checkbox on the login page was being ignored
Use an application-specific key when signing Duo requests
Add debug mode which enables verbose logging
Remove unnecessary assets to reduce package size

2.0

Fix an issue that allowed some users to bypass 2FA on multisite networks

1.8.1

Fix multi-site login issue

1.8

Add support for modal login pages in wordpress 3.8

1.7

Fix various single-site and multi-site compatability issues with WordPress instances running 3.0 and 3.2
Support for WordPress 3.7.1
Compatability with WP-Engine WordPress hosting service
Fix some style issues on the settings page

1.6.2

Fix a rare conflict with other plugins

1.6.1

Add support for WordPress 3.6.1
Fix an issue that prevented admins from enabling XMLRPC on multisite instances
Remove Duo configurations when the plugin is uninstalled from a multisite wordpress instance
Better support for some custom themes
Make Duo skey setting a password field

1.6

Add support for Duo’s new user enrollment frame

1.5.3

Improve the way we ping Duo servers

1.5.2

Included the root cert we validate agianst for better ssl certificate validation

1.5.1

Add better SSL certificate validation when fetching server time
Modify duo_web to remove the need for NTP

1.5

Removed NTP sync requirement
All duo options will now be removed when plugin is uninstalled

1.4.2

Better compatibility with other plugins
Added setting for enabling/disabling XML-RPC access

1.4.1

Improved handling of enabling Duo for specific roles

1.4

Improved WordPress Multisite compatibility

1.3.4

Compatibility with >3.3

1.3.3

Added additional error checking

1.3.2

Verified compatibility with WordPress 3.2

1.3.1

Fixed a bug with user roles

1.3

Default all roles to enable Duo login for upgraded users (same as new installs).
Require the API hostname setting
Code cleanups

1.2

Select which roles need to authenticate with Duo

1.1.1

CSS fixes for IE 6, 7, and 8

1.1

Minor tweaks

1.0

Initial release!

Extra Security

Death by bit rot.

No updates for half a year, no PHP 8. Too bad

Works great!

Excellent Product

Excellent