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WPMU DEV Defender Pro

by WPMU DEVv6.4.0Unlimited sites

WPMU DEV Defender Pro by WPMU DEV is a WordPress security plugin for site owners, developers, and agencies.

Product facts

Version
6.4.0
Released
27 October 2026
Type
Plugin
Licence
GPL
Included in
Every plan, or $0.79 / year on its own

Overview

WordPress sites can face malware, vulnerable software, suspicious files, and unwanted login attempts. Defender Pro brings several security tools into one plugin, including scheduled malware scans, vulnerability checks, firewall protection, and login safeguards. Site owners can use scan results and security reports to review potential issues, then apply available fixes or repair suspicious files.

The plugin includes two-factor authentication, login page masking, and controls for blocking specific IP addresses or countries. Its firewall can block malicious IPs, while session protection helps guard user sessions against hijacking. For freelancers and agencies managing client sites, audit logs record security events and admin actions, and white label branding lets them apply their own brand.

Features

  • Scheduled malware scans: Run scheduled scans to check a WordPress site for malware, then review scan details for issues such as suspicious code.
  • Vulnerability detection: Use Patchstack-powered scanning to identify known security vulnerabilities and review available options for addressing them.
  • Firewall protection: The AntiBot Global Firewall blocks malicious IP addresses, and firewall tools let you manage allowed and blocked IP lists.
  • Suspicious file repair: Repair or replace suspicious and compromised files with the plugin's safe repair tools.
  • Login safeguards: Add two-factor authentication, mask the WordPress login page, and protect against brute-force login attempts.
  • IP and country controls: Block access from selected countries or specific IP addresses to set access rules for your site.
  • Security audit logs: Review records of security events and administrator actions for troubleshooting and site oversight.

Best for

  • WordPress site owners
  • Freelancers managing client sites
  • Agencies overseeing WordPress sites

Changelog

Version 6.4.0 — 27 October 2026

  • Improved Update malware signatures
  • Improved Improve Hub experience
  • Improved Sanitize dangerouslySetInnerHTML content using DOMPurify with allowed tags and attributes
  • Improved Ensure session locking does not bypass idle-timeout validation
  • Improved Improvements to Audit Logging in both API and plugin
  • Improved Add an option to synchronize plugin configs with the Hub
  • Improved Improve page skeleton loader
  • Improved Update Hub Connector submodule
  • Improved Banning location improvements
  • Improved Activity Log improvements
  • Improved Style improvements on Setup Wizard page
  • Fixed Warnings on Defender WP CLI
  • Fixed Schedule Scan and Reporting feature not working on multisite
  • Fixed XML-RPC showing as forbidden
  • Fixed Fix an error due to failure in downloading the MaxMind DB
  • Fixed Many requests from "Defender Self Ping"
  • Fixed Pro is missing from Defender Card title in Settings > Other Settings page
  • Fixed Info tooltips don't open from the keyboard
  • Fixed Apostrophe appears as wrong HTML characters in strong password custom message
  • Fixed Docs button does not navigate to the relevant documentation section
  • Fixed Custom app title and Custom authentication emails toggles don't save changes

Earlier versions

  • 6.3.0 (22 September 2026): 14 improved, 9 fixed
  • 6.2.4 (1 September 2026): 3 fixed
  • 6.2.3 (31 August 2026): 3 improved, 5 fixed

FAQ

Is WPMU DEV Defender Pro free?

The code of WPMU DEV Defender Pro is licensed under the GPL, so anyone may use, change and share it. GPL 247 is a paid service: a plan or a purchase of WPMU DEV Defender Pro gives you the download and its updates. The developer's own support, licence key and online services are not included.

Which version of WPMU DEV Defender Pro is this?

Version 6.4.0, released 27 October 2026. New versions appear here when the developer publishes them.

How do I update WPMU DEV Defender Pro?

Install GPL 247 Updater on your site and paste your key from My Account. It installs new versions of WPMU DEV Defender Pro for you.