Free Active Wordfence Security Premium guide

Wordfence Security is a popular security plugin for WordPress. It offers many features to protect your website from threats. If you upgrade from Wordfence Security Free to Wordfence Premium, you will have additional advanced security features. Some uses of the Wordfence Security plugin:

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Detect and block malware: Wordfence scans your web files for malware and blocks malicious attacks before they can cause harm.
Brute force prevention: Wordfence blocks brute force attacks that attempt to guess a user's password.
Alarms and notifications: Wordfence notifies you about suspicious activities on your website and provides detailed information about attacks.
Network Firewall: Wordfence has a powerful network firewall that helps block attacks from the network.
Real-time scanning: Wordfence scans your website in real-time for potential threats.
Supports many languages: Wordfence supports many languages, including Vietnamese.

Compare Wordfence Security free and Premium versions

Feature	Free of charge	Premium
Security scan	Basic scanning for malware, vulnerabilities, and other threats	Advanced scanning for malware, vulnerabilities, zero-day attacks, and other threats
Web Application Firewall (WAF)	Block malicious traffic	Block malicious traffic, bots, and other advanced threats
Login security	Two-factor authentication (2FA)	Two-factor authentication (2FA), CAPTCHA, blocking logins based on leaked passwords
Monitor activities	Monitor website activity and get notified about suspicious activities	Monitor detailed website activity, receive notifications of suspicious activities, and analyze user behavior
Support	Community forum	Email and priority ticket support
Update	Free security and feature updates	Security updates and premium features

The free version of Wordfence Security almost meets user requirements, however if you want to upgrade to the Wordfence Security Premium version, there is a fairly simple way to edit the activation code of this plugin. This method is safe and does not use a third-party application, so you can do it yourself to activate the features of Wordfence Security Premium.

After installing Wordfence Security Plugin or Download Wordfence Security Plugin From the WordPress homepage, access the folder: wp-content/plugins/wordfence/lib/

Find and open the file wordfenceClass.php using an editing program like notepad++, sublime text Or notepad is fine.

Press Ctrl + F to find the following code: if (!WFWAF_SUBDIRECTORY_INSTALL && $waf = wfWAF::getInstance()) {

Depending on each version, it will be located on different lines, like in version 7.11.6 it will be on line 2145.

You will see these 3 pieces of code after searching:

if (!WFWAF_SUBDIRECTORY_INSTALL && $waf = wfWAF::getInstance()) {
$homeurl = wfUtils::wpHomeURL();
$siteurl = wfUtils::wpSiteURL();

Now add this code below the code above:

wfConfig::set('isPaid', 1);
wfConfig::set('keyType', wfLicense::KEY_TYPE_PAID_CURRENT);
wfConfig::set('premiumNextRenew', time()+31536000);

The result will be ok as shown:

Now you Save and go back to the Plugin and you will see Active Wordfence Security Premium for free. The line appears: Premium License Expiring is successful.