Duo Security

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:
<ul>
<li>One-tap authentication using Duo’s mobile app (our fastest, easiest way to authenticate)</li>
<li>One-time passcodes generated by Duo’s mobile app (works even with no cell coverage)</li>
<li>One-time passcodes delivered to any SMS-enabled phone (works even with no cell coverage)</li>
<li>Phone callback to any phone (mobile or landline!)</li>
<li>One-time passcodes generated by an OATH-compliant hardware token (if you’re feeling all old school)</li>
</ul>
Protect your WordPress website in minutes with Duo.
<h3>End of Support Notice</h3>
Support for the traditional Duo Prompt experience using the Duo WordPress plugin ended on September 30, 2024. Please use the new <a href="https://wordpress.org/plugins/duo-universal/" rel="ugc">Duo Universal plugin for WordPress</a>. Read more about the End of Suppport and migration to the new plugin on our <a href="https://duo.com/docs/wordpress" rel="nofollow ugc">Duo for WordPress – Duo Universal Prompt</a> documentation page

Duo Two-Factor Authentication

Easily add Duo Security two-factor authentication to your WordPress website. Enable two-factor authentication for your admins and/or users.

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It is versatile, device-independent and based on opened security standards. 
OpenOTP provides fine-grained user identity and access management (IAM), one-time passwords authentication technologies (OTP), Universal Second Factor (U2F) and extensive authentication policies for your AD / LDAP users. 
It is enterprise-ready with strong support for high-availability, load-balancing, multi-tenancy, cloud-readiness, geolocalization, delegated administration and much more.

OpenOTP Two-Factor Authentication

OpenOTP plugin Enable two-factor authentication for your admins and/or users The plugin will transparently handle any OpenOTP Login Mode including, LD …

Duo Two-Factor Authentication vs OpenOTP Two-Factor Authentication