Protect your WordPress website from hackers, malware, and security vulnerabilities with Security Ninja, a trusted WordPress security plugin since 2011. This all-in-one security solution safeguards your site with 50+ security tests, malware scanning, a firewall, brute force attack protection, and real-time vulnerability detection.

Security Ninja Plugin proactively identifies security risks, ensuring your WordPress website stays secure without slowing it down. With features like automated security scans, login protection, IP blocking, and two-factor authentication (2FA), it provides comprehensive website protection against cyber threats.

Whether you're a beginner or an advanced user, Security Ninja is designed for effortless WordPress security management, keeping your site safe while you focus on growing your business. Install today and take control of your website's security!

This plugin can be downloaded for free without any paid subscription from the official WordPress repository.

Why Choose Security Ninja? – The Ultimate WordPress Security Plugin

• Comprehensive Security Testing – Run 50+ WordPress security tests to detect vulnerabilities before hackers exploit them.
• Enhanced Vulnerability Scanner – Stay ahead of emerging threats with proactive alerts for vulnerabilities.
• Core Scanner - Find and remove modified and unwanted files in your WordPress core files.
• Advanced Malware Scanner (PRO) – Identify and remove malicious code, hidden threats, and suspicious files instantly.
• Powerful Firewall Protection (PRO) – Block brute-force attacks, unauthorized logins, and suspicious IPs with real-time security.
• Secure Login & 2FA (PRO) – Strengthen your WordPress login page with Two-Factor Authentication (2FA) and login attempt limits.
• Cloud-Based Threat Intelligence (PRO) – Stay ahead of cybercriminals with real-time updates on the latest security threats.
• One-Click Security Fixes (PRO) – Fix security issues instantly with an easy-to-use, beginner-friendly dashboard.
• Automated Security Scans & Reports (PRO) – Schedule scans and get detailed reports sent to your inbox.
• Activity Log & User Tracking (PRO) – Track all user actions on your WordPress website with a detailed activity log and receive alerts for suspicious activity.

Key Features of Security Ninja – The Ultimate WordPress Security Plugin

Security Ninja is a powerful WordPress security plugin designed to protect your website from hackers, malware, brute-force attacks, and security vulnerabilities. With 50+ security tests, real-time malware scanning, a firewall, and login protection, Security Ninja keeps your WordPress site secure without slowing it down.

Comprehensive WordPress Security Testing

Security Ninja performs 50+ advanced security tests to identify vulnerabilities before hackers exploit them. This includes:

• Brute-force protection – Blocks unauthorized login attempts to prevent forced entry.
• File integrity monitoring – Detects unauthorized changes to WordPress core files, themes, and plugins.
• Database security checks – Identifies weak database permissions and potential SQL injection threats.
• User role audits – Ensures no unauthorized administrator accounts exist.
• Security misconfiguration scans – Identifies and fixes weak settings that could compromise security.

Enhanced Vulnerability Scanner

• Stay Ahead of Threats – Our vulnerability scanner proactively alerts you to known vulnerabilities, allowing you to address potential threats before they exploit your website.
• Comprehensive Protection – Security Ninja not only checks and warns for common issues but also checks for known vulnerabilities in plugins and themes.
• Peace of Mind – Knowing your site is monitored for the latest vulnerabilities means you can focus on what matters most, growing your business and creating content, worry-free.

Core Scanner – Comprehensive Protection for Your WordPress Installation

The Core Scanner module adds a critical layer of security by ensuring your WordPress installation remains untampered and free of unauthorized files.

• Full Core File Integrity Check: Every file in your core WordPress folders is scanned to ensure it hasn't been modified or compromised.
• Detection of Unknown Files: The scanner flags any extra or unknown files in your core WordPress directories, alerting you to potential threats.
• Built-in File Viewer: Review flagged files directly within your WordPress dashboard using the integrated file viewer for a clear and easy inspection.
• Restore Core Files: If a core WordPress file has been altered, you can quickly restore it with a single click, ensuring your site is running the official version.
• Easy File Management: For unknown or suspicious files, you have the option to delete them right from the interface, keeping your WordPress installation clean and secure.

Advanced Malware Scanner – Detect & Remove Malware Instantly (PRO)

Security Ninja includes a high-performance malware scanner that automatically checks your WordPress core, plugins and themes for:

• Malicious scripts and backdoors – Identifies hidden malware and harmful injections.
• Trojan and virus detection – Scans for suspicious PHP and JavaScript entries.
• One-click malware removal – Instantly quarantine and delete infected files.

WordPress Firewall & Real-Time Threat Protection (PRO)

The Web Application Firewall (WAF) blocks hacker attempts, bot attacks, and brute-force login attempts before they can damage your site.

• Real-time protection – Prevents malicious traffic and automated hacking attempts.
• IP & Country Blocking – Restrict access from high-risk countries and blacklisted IPs.
• Cloud-Based Threat Intelligence – Updated with the latest security threats.

Login Security & Two-Factor Authentication (2FA) (PRO)

Your WordPress login page is a primary target for hackers. Security Ninja enhances login security with:

• Two-Factor Authentication (2FA) – Requires additional verification for safer logins.
• Brute-force attack protection – Limits failed login attempts to block unauthorized access.
• Rename login - Getting a lot of requests to your login form? Hide it for spammers.

One-Click Security Fixes & WordPress Hardening (PRO)

Manually fixing security issues is time-consuming. Security Ninja provides one-click hardening to:

• Disable XML-RPC – Blocks common DDoS attacks and brute-force exploits.
• Restrict file editing – Prevents unauthorized theme and plugin modifications.
• Hide PHP error messages – Stops hackers from exploiting sensitive error details.

And many more fixes to harden your WordPress security!

Activity Log & User Tracking (PRO)

Keep track of all actions on your WordPress website with a detailed activity log:

• Monitor failed login attempts, plugin activations, file changes, and user actions.
• Receive email alerts whenever suspicious activity is detected.
• Export security logs for audits and compliance reports.
• The plugin includes webhook functionality so you can integrate with any other 3rd party service, maybe send updates in the company Slack channel when a hack attempt was thwarted?

Automated Security Scans & Reports (PRO)

Security Ninja performs scheduled security scans and sends reports directly to your inbox.

• Set up daily, weekly, or monthly security scans.
• Receive email alerts about vulnerabilities and malware infections.
• Analyze detailed reports to keep your website secure.

Block Spam & Malicious Bots Instantly (PRO)

Hackers and spammers use bots to exploit WordPress websites. Security Ninja prevents:

• Fake registrations and spam comments – Stops bots from even getting to your site.
• Malicious bot attacks – Blocks scripts attempting to hack your site.
• Unwanted traffic – Reduces server load by preventing unnecessary bot access.

Join thousands of satisfied users who trust Security Ninja to keep their websites safe. Start protecting your online presence today and help yourself to peace of mind.

Why Security Ninja is Best WordPress Security Plugin

Security Ninja is the best WordPress security plugin because it provides a comprehensive, lightweight, and easy-to-use solution to protect your website from hackers, malware, and vulnerabilities. With 50+ security tests, an advanced malware scanner, a firewall, and two-factor authentication (2FA), it ensures complete website protection without slowing down performance.

Unlike bloated security plugins, Security Ninja is optimized for speed and efficiency. It offers one-click security fixes, automated scans, real-time threat detection, and login protection, making it ideal for beginners and advanced users alike. Trusted since 2011, it keeps thousands of websites secure while offering proactive protection against cyber threats.

Who is this plugin for?

Security Ninja is perfect for anyone looking to bolster their site's defenses against hackers and ensure robust security.

Will this plugin slow down my site?

No significant slowdown occurs. You might notice a brief slow down during scanning, lasting less than a minute.

Will it work with my theme?

Yes, Security Ninja is designed to be compatible with all themes, ensuring wide-ranging applicability.

What changes will Security Ninja make to my site?

Security Ninja performs diagnostics and offers recommendations without making any direct changes to your site.

How safe is this plugin?

Absolutely safe. It functions solely as a diagnostic tool, providing insights without altering your site.

Is using Security Ninja legal?

Yes, it's completely legal for your own site. It's designed to run tests on the site where it's installed, aiding in your site's security enhancement.

What if I encounter issues with the plugin?

While we strive for universal compatibility, if you face any issues, our support team is ready to assist. Visit our support forum to open a new thread, and we'll help you as soon as possible.

5.259

• 2025-11-xx
• IMPROVED: Made the dashboard widget visible when white label mode is enabled. Previously the widget was hidden instead. Thank you for the suggestion, Dmitry.
• IMPROVED: Added count-based limit (5000 entries) to visitor log pruning to prevent database bloat on high-traffic sites.
• IMPROVED: Removed deprecated X-XSS-Protection header from REST API - modern browsers ignore this header and Content-Security-Policy is the recommended replacement. Thank you Dmitry for the suggestions.
• IMPROVED: More information on CSP in our knowledgebase.
• FIX: Fixed typo in Permissions-Policy description (explitly → explicitly).
• FIX: Updated Permissions-Policy documentation link from Feature-Policy to Permissions-Policy URL.
• FIX: Corrected Nginx example in Content-Security-Policy test descriptions (was showing X-Frame-Options instead of CSP).
• Preparing for plugin rewrite -> improving the free version and streamlining the premium and free feature set.

5.258

• 2025-11-06
• NEW: Enhanced username enumeration protection - Now prevents username discovery via REST API /wp-json/wp/v2/users endpoint and oEmbed API, in addition to existing ?author=N scan protection. Thanks Allen.

5.257

• 2025-10-22
• Removed duplicate 2FA login requests to prevent error flashes. Thanks to Eric for spotting this.
• Added try-catch to prevent problems with corrupted IP location database, thank you Wan.

5.256

• 2025-10-09
• Fix for recommendation engine "wp-config.php not found in the wordpress root directory" - now properly checks for when the config file has been moved up on level. Thank you Eric.
• Fix - 2FA email, user reported emails were sent twice with two different codes. Thank you Eric.
• Improved 2FA setup page stability and performance across different WordPress configurations.
• 2FA - naming of the accounts are now a little more intuitive. Thank you Davina.

5.255

• NEW: Added XML-RPC protection feature. This update enhances your site's security by allowing you to easily enable or disable XML-RPC access.
• Improved: Malware signatures tweaked and improved, thank you users for suggestions.

5.254

• NEW: Add secret key display and copy functionality to 2FA module in frontend and backend. Allowing users to easier add the key to their system.
• FIX: Installation issues that pop up occasionally has been fixed.
• FIX: Timezone on Overview page was incorrect, thank you for spotting Ivar.
• FIX: Resolved JavaScript conflicts that prevented 2FA functionality from working with ARMember and other plugins
• FIX: 2FA QR code/key generation now works reliably across all site configurations, even if other scripts have errors. "Skip for now" link, "Generate new QR code" button, code input validation, and temporary secret usage during setup all function correctly.
• FIX: 2FA setup UI and logic are now robust—QR code generation.
• IMPROVED: Enhanced 2FA JavaScript with robust error handling and DOM ready protection
• IMPROVED: Added inline JavaScript handlers as fallback to ensure 2FA works even when external scripts fail
• IMPROVED: Better error messages and user feedback during 2FA setup process

5.253

• NEW: Setting up 2FA for users in admin pages
• Fix for coupon protection in WooCommerce modern block cart and checkout page - Thank you Priit.

5.252

• Fixes for REST API warnings.
• Updated internal libraries (PHP enums, WordPress SDK, and PHP_CodeSniffer tooling) to latest patch versions for improved stability, coding standards checks, and compatibility. No breaking changes.

5.251

• Fix: Removed extra whitespace in "import/export".
• Fix: Improved "Fixes" features proper loading when doing import/export.

5.250

• Remove translated messages for errors logging in, creating a loop trying to present translated messages using WP's translation engine.
• Fix: Fixed database prefix renaming to properly handle option names containing embedded prefixes. Thank you Chris!
• Enhanced: Improved custom login URL security with proper access control and error handling

...

Entire changelog can be seen here: changelog

Installing from WordPress

1. Open WordPress admin, go to Plugins, click Add New
2. Enter "Security Ninja" in search and hit Enter
3. Plugin will show up as the first on the list, click "Install Now"
4. Activate & go to Tools - Security Ninja to make your site more secure

Installing Manually

1. Download the plugin.
2. Unzip it and upload to wp-content/plugin/
3. Open WordPress admin - Plugins and click "Activate" next to the plugin
4. Activate & go to Security Ninja to make your site more secure

Fast & easy to understand interface.



Security Ninja test results are simple and easy to read.



Vulnerable plugins list with details and recommendations - prevent known exploits in plugins.



Core scanner