Easily improve site security with WordPress Hardening, Two-Factor Authentication (2FA), Login Protection, Vuln...
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3M+ installs 4.9★ (8,862)
Security Optimizer
Secure your WordPress site from brute-force attacks, threats, malware, and bots. Free to use and easy to set up.
The facts
- Rating
- 4.5★ from 157
- Active installs
- 1M+
- Price
- Free
- Last updated
- 28 Aug 2026
- Added
- May 2021
- Requires WP
- 4.7
- Tested up to
- WP 7.1
- Requires PHP
- 7.0
- Downloads
- 38,627,236
Our analysis
AI-assistedSecurity Optimizer is a WordPress plugin designed to enhance website security by protecting against various threats such as brute-force attacks and malware. It offers features like two-factor authentication, login attempt limits, and the ability to hide the WordPress version to improve security. This plugin is suitable for webmasters looking to safeguard their WordPress sites from potential vulnerabilities.
Developed by SiteGround, Security Optimizer is trusted by over a million users and provides tools to monitor site activity and take immediate action against suspicious behaviour. Its comprehensive approach makes it a valuable resource for those managing WordPress applications on any hosting platform.
Best for: This plugin suits webmasters seeking to improve the security of their WordPress sites.
What it does well
- ✓Free to use from the WordPress.org directory
- ✓Offers two-factor authentication for added security
- ✓Limits login attempts to deter brute-force attacks
- ✓Allows custom login URLs to avoid attacks
- ✓Includes an activity log to monitor site security
Where it falls short
- •Limited information on specific performance metrics
- •No details on support or documentation available
Verdict
Security Optimizer provides a solid set of features for enhancing WordPress security. It is particularly useful for those who want a straightforward solution to protect their sites from common threats.
From the developer
SiteGround's own description of Security Optimizer, lightly tidied.
Bulletproof your website security in a few clicks against a range of security breaches, including brute-force attacks, malware threats and bots, with our free WordPress security plugin – Security Optimizer.
Proactively monitor your site’s security to detect any suspicious activity and take immediate actions to protect your site and prevent further damage with these essential features:
- Enable 2FA (Two-Factor Authentication) for an extra layer of website security
- Set Limit Login Attempts to deter malicious login attempts and brute-force attacks
- Change your default login URL to Custom Login URL to avoid attacks
- Activate Advanced XSS Protection to fortify your website against malicious attacks
- Lock and Protect System Folders to ensure no unauthorized or malicious scripts can be executed in your system folders
- Disable Themes & Plugins Editor to safeguard your website from unauthorized access via the WordPress editor
- Hide WordPress Version effortlessly, keeping it hidden from prying eyes
- Use Activity Log to monitor your site and quickly prevent malicious actions
- Post-Hack Actions to take immediate actions and prevent further damages
Developed by the website security experts at SiteGround and trusted by over 900,000 webmasters for its robust security shield and ease of use to safeguard WordPress applications from possible attacks on any hosting platform.
Awards:
Monster Awards 2022: Best WordPress Security Plugin 🥇
Monster Awards 2021: Best WordPress Security Plugin 🥇
Plugin Video
Plugin Tutorial
Unveil the vast array of features and unleash the full potential of our security plugin in our Security Optimizer Tutorial.
Site Protection features
Safeguard your WordPress application using our powerful site security toolset. Our comprehensive features are specifically designed to strengthen your website’s defenses against malware, exploits, and various malicious activities. With these tools at your disposal, you can ensure the utmost bot, malware and brute force protection for your website:
Lock and Protect System Folders
Ensure the maximum security for your application’s system folders by preventing the execution of any unauthorized or malicious scripts. The Lock and Protect System Folders feature acts as a powerful shield against potential threats.
Hide WordPress Version
Protect your website from mass attacks by hiding the WordPress version, which helps to mitigate version-specific vulnerabilities.
Disable Themes & Plugins Editor
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