Two Factor Authentication free WordPress plugin

Secure WordPress login with this two factor authentication (TFA / 2FA) plugin. Users for whom it is enabled will require a one-time code in order to log in. From the authors of UpdraftPlus – WP’s #1 backup/restore plugin, with over two million active installs. Are you completely new to TFA? If so, please see our FAQ. Features (please see the “Screenshots” for more information): Supports standard TOTP + HOTP protocols (and so supports Google Authenticator, Authy, and many others). Displays graphical QR codes for easy scanning into apps on your phone/tablet TFA can be made available on a per-role basis (e.g. available for admins, but not for subscribers) TFA can be turned on or off by each user TFA can be required for specified user levels, after a defined time period (e.g. require all admins to have TFA, once their accounts are a week old) (Premium version) Supports front-end editing of settings, via [twofactor_user_settings] shortcode (i.e. users don’t need access to the WP dashboard). (The Premium version allows custom designing of any layout you wish). Site owners can allow “trusted devices” on which TFA codes are only asked for a chosen number of days (instead of every login); e.g. 30 days (Premium version) Works together with “Theme My Login” (both forms and widgets) Includes support for the WooCommerce and Affiliates-WP login forms Includes support for Elementor Pro login forms (Premium version) Includes support for any and every third-party login form (Premium version) without any further coding needed via appending your TFA code to the end of your password Does not mention or request second factor until the user has been identified as one with TFA enabled (i.e. nothing is shown to users who do not have it enabled) WP Multisite compatible (plugin should be network activated) Simplified user interface and code base for ease of use and performance Added a number of extra security checks to the original forked code Emergency codes for when you lose your phone/tablet (Premium version) When using the front-end shortcode (Premium version), require the user to enter the current TFA code correctly to be able to activate TFA Works together with “WP Members” (shortcode form) Administrators can access other users’ codes, and turn them on/off when needed (Premium version) Why use TFA / 2FA ? Read this! https://www.wired.com/2012/08/apple-amazon-mat-honan-hacking/ How Does TFA / 2FA Work? This plugin uses the industry standard TFA / 2FA algorithm TOTP or HOTP for creating One Time Passwords. These are used by Google Authenticator, Authy, and many other OTP applications that you can deploy on your phone etc. A TOTP code is valid for a certain time. Whatever program you use (i.e. Google Authenticator, etc.) will show a different code every so often. Plugin Notes This plugin began life in early 2015 as a friendly fork and enhancement of Oscar Hane’s “two factor auth” plugin.