How to Prevent Brute Force Attacks on Your WordPress Site

How to Prevent Brute Force Attacks

Today I am going to talk about WordPress security. Recently I have been busy fixing hacked WordPress sites so Let me talk about brute force attacks. Brute force attacks are one of the most common threats to WordPress websites. These attacks involve hackers systematically guessing usernames and passwords until they gain access. Since WordPress powers over 40% of websites on the internet, it’s a prime target for cybercriminals. A single successful brute force attack can lead to stolen data, site defacement, or complete takeover.

To protect your WordPress site, you need a solid security strategy. I'll cover what brute force attacks are, how they work, and the best methods to prevent them.

1. What is a Brute Force Attack?

A brute force attack is a cybersecurity method where hackers use trial-and-error to guess login credentials, encryption keys, or hidden web pages. Relying on immense computing power rather than sophisticated trickery, automated bots systematically test thousands of combinations per second until they stumble upon the correct answer. Let's dive into this deeper:

**A. How Do Brute Force Attacks Work? **

Brute force attacks work in few different ways some of them being:

• ✅ Attackers use automated bots to repeatedly guess username-password combinations.
• ✅ They exploit weak passwords and common login credentials.
• ✅ The attack continues until they successfully log in or get blocked.

B. What Types of Brute Force Attacks are There?

There a few different brute force attack methods. Some of them being:

• ✅ Simple Brute Force Attack: A bot will try every possible password combination.
• ✅ Dictionary Attack: Uses a list of common passwords (e.g., “password123,” “admin,” “123456”).
• ✅ Reverse Brute Force Attack: Uses a single password against many usernames.
• ✅ Credential Stuffing: Uses leaked username-password pairs from data breaches. I recommend password savers like Last Pass. The reason behind this is I can set a 25 character password and it's different for every site.

C. Why WordPress is a Target

WordPress is a prime target for hackers for a few reasons:

• ✅ WordPress’s popularity makes it attractive to hackers.
• ✅ Many users fail to update passwords or security settings.
• ✅ Default login pages (e.g., /wp-login.php) are easy to find. Try setting your login page to a childhood memory or something you can remember but no one else will guess.

2. What Signs are There Your WordPress Site is Under a Brute Force Attack?

There are a few different signs you can spot to tell if you have been attacked or attemped.

A. Increased Login Attempts

• ✅ Multiple failed login attempts from different IPs.
• ✅ Unusual spikes in server resource usage.

B. Locked Out of WordPress Admin

• ✅ If hackers guess your password, you might be locked out of your own site.
• ✅ Unusual new admin accounts may appear.

C. Server Slowdowns or Downtime

• ✅ Continuous login attempts can slow down or crash your site.
• ✅ High CPU usage in your hosting dashboard could be a red flag.

3. How Do You Prevent Brute Force Attacks on WordPress?

There is no secret to preventing brute force attacks. There are some things you can do to help prevent it.

A. Strengthen Your Login Credentials

• ✅ Use long, complex passwords with letters, numbers, and symbols.
• ✅ Avoid common usernames like “admin” or “webmaster”.
• ✅ Consider using passphrases instead of traditional passwords.

B. Enable Two-Factor Authentication (2FA)

• ✅ Requires a second verification step (e.g., SMS or authenticator app).
• ✅ Even if attackers guess your password, they can’t log in without the second factor.
• ✅ Plugins like Google Authenticator, Authy, or Wordfence Login Security can help. I cannot stress this enough.

C. Limit Login Attempts

• ✅ Install security plugins like Limit Login Attempts Reloaded or WP Cerber.
• ✅ Restrict failed login attempts to 3-5 per IP before temporary lockout.
• ✅ Helps prevent bots from repeatedly trying passwords.

D. Change the Default Login URL

• ✅ Move the WordPress login page from /wp-admin or /wp-login.php.
• ✅ Plugins like WPS Hide Login or iThemes Security can do this.
• ✅ Prevents automated bots from easily finding the login page.

If you are like me, plugins cause bloat. Here is how to code it yourself.

• Add constant to wp-config.php
  
  

define('WP_ADMIN_DIR', 'secret-folder');

define( 'ADMIN_COOKIE_PATH', SITECOOKIEPATH . WP_ADMIN_DIR);

• Add below filter to functions.php

add_filter('site_url',  'wpadmin_filter', 10, 3);

function wpadmin_filter( $url, $path, $orig_scheme ) {

    $old  = array( "/(wp-admin)/");

    $admin_dir = WP_ADMIN_DIR;

    $new  = array($admin_dir);

    return preg_replace( $old, $new, $url, 1);

}

• Add below line to .htaccess file
  
  

RewriteRule ^secret-folder/(.*) wp-admin/$1?%{QUERY_STRING} [L]

Easy, huh? just replace secret-folder with anything you want. Remember secret folder is listed twice. These must match in order to work.

E. Use a CAPTCHA on Login Pages

• ✅ Google reCAPTCHA blocks bot traffic while allowing real users.
• ✅ Protects against automated brute force attacks.
• ✅ Popular plugins: reCaptcha by BestWebSoft, hCaptcha, and Login No Captcha reCAPTCHA.

F. Implement IP Blacklisting & Geoblocking

• ✅ Block known malicious IP addresses using Wordfence or Sucuri.
• ✅ Restrict access from countries where you don’t expect login attempts.
• ✅ Works well for local businesses that don’t need global access.

G. Enable Multi-User Role Restrictions

• ✅ Give users only necessary permissions (avoid giving admin access to everyone).
• ✅ Require strong passwords for all accounts, not just admins.
• ✅ Use security monitoring tools to track suspicious user activity.

H. Install a WordPress Security Plugin

• ✅ Plugins like Wordfence, Sucuri Security, iThemes Security, and MalCare provide multiple layers of protection.
• ✅ Features include firewalls, malware scanning, and brute force prevention.

I. Secure Your Hosting & Server

• ✅ Use managed WordPress hosting with built-in security (e.g., Kinsta, WP Engine, SiteGround).
• ✅ Regularly update PHP versions and use SSL encryption.
• ✅ Set up a web application firewall (WAF) to filter bad traffic.

4. How do you Recover from a Brute Force Attack?

To recover from a brute force attack you need to:

A. Regain Admin Access

• ✅ If locked out, reset the password via phpMyAdmin or FTP.
• ✅ Check for new suspicious admin users and remove them.

B. Restore a Clean Backup

• ✅ If hackers gained access, restore your website from a recent backup.
• ✅ Ensure backups are stored offsite or on cloud services.
• ✅ Popular backup plugins: UpdraftPlus, Jetpack Backup, BlogVault.

C. Scan for Malware & Remove Suspicious Files

• ✅ Use security plugins to scan for injected malicious code.
• ✅ Delete unknown scripts from wp-content/uploads, themes, and plugins.
• ✅ If unsure, consult a WordPress security expert.

5. What are Long-Term WordPress Security Best Practices?

To keep your WordPress secure for the long term you can consider:

A. Keep WordPress Core, Plugins & Themes Updated

• ✅ Regular updates fix vulnerabilities that hackers exploit.
• ✅ Enable auto-updates for security patches when possible.

B. Use a Firewall & DDoS Protection

• ✅ Web Application Firewalls (WAF) block malicious traffic before it reaches your site.
• ✅ Cloudflare and Sucuri offer real-time threat monitoring and DDoS protection.

C. Schedule Regular Security Audits

• ✅ Perform security scans weekly or monthly.
• ✅ Review login activity and failed login attempts.
• ✅ Identify vulnerabilities before attackers exploit them.
• ✅ Buy our website maintenance package and let us deal with it.

Final Thoughts

Brute force attacks remain a major cybersecurity threat, but proactive security measures can significantly reduce risks. By strengthening login credentials, enabling 2FA, limiting login attempts, and using security plugins, you can keep your WordPress site safe from hackers.

Cyber threats are constantly evolving, so maintaining a strong security posture is essential. Start implementing these security strategies today to safeguard your WordPress site from brute force attacks!