Is Senpai Software free?

Yes, Senpai Software is free to use. It is available as a free plugin on WordPress.org.

How many websites use Senpai Software?

Senpai Software has 10 active installations as tracked by WordPress.org.

What are the best Senpai Software alternatives?

Popular alternatives to Senpai Software include Wordfence Security – Firewall, Malware…, Really Simple Security – Simple and…, Limit Login Attempts Reloaded – Login…. You can compare them side-by-side on our comparison pages.

Does Senpai Software work with the latest WordPress?

Senpai Software has been tested up to WordPress 6.4.8. It requires WordPress 5.0+ and PHP 5.6+.

Senpai Software – Two-factor authentication (2FA) with a key file — Reviews, Rating & Alternatives (2026)

Name: Senpai Software – Two-factor authentication (2FA) with a key file
Rating: 5 (3 reviews)
Author: Serhii Kolomiitsev

As of April 2026, Senpai Software is a WordPress 2FA plugin with 10 active installations and a 5/5 rating from 3 reviews. It has been downloaded 3.5K+ times in total. Requires WordPress 5.0+ and PHP 5.6+. Available on WordPress.org since 2023. Last updated 2 years ago — may have compatibility concerns. Top alternative: Wordfence Security – Firewall, Malware….

5/53 reviews

10active installs

3.5K+total downloads

3 yearssince 2023

Overview

THE MOST UNIQUE TWO-FACTOR AUTHENTICATION METHOD

This plugin gives you the ability to turn any file on your computer into a unique key which you will use to access the admin area.

The plugin only works using HTTPS!

Properties

File is not downloaded or stored physically on the site.
The plugin does not create additional security risks.
Plugin code does not create additional load on the site.
Intuitive interface.
Provides the maximum level of protection against brute force attacks. Even if a hacker has access to your computer, it will be extremely difficult for him to guess which file is the key.
Any file can be used as a key, for example: photo, video, text document, song, operating system system file, whatever…
File size up to 1 GB.
Limit Login Attempts.
Disable XML-RPC.

Keep in m…

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