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Free Plugin by SiteLock v5.1.2

SiteLock Security

Free, lightweight WordPress security. Harden your site with login protection & 2FA, see Site Health clearly and run on-demand checks—setup in minutes.

SiteLock Security

The facts

Rating
3.4★ from 14
Active installs
1k+
Price
Free
Last updated
23 Jun 2026
Added
May 2013
Requires WP
5.6
Tested up to
WP 7.0.4
Requires PHP
8.0
Downloads
53,819

Our analysis

AI-assisted

SiteLock Security is a WordPress plugin designed to enhance the security of your website through hardening measures and login protection. It features Two-Factor Authentication (2FA) and a Site Health dashboard to provide users with a clear overview of their site's security status. The plugin operates with a cloud-powered architecture to ensure minimal impact on site performance while offering essential security controls.

This plugin is suitable for WordPress users looking for straightforward security solutions that can be implemented quickly. It is particularly beneficial for those who want to maintain a secure baseline with minimal overhead and have the ability to conduct on-demand security checks without heavy resource usage.

Best for: This plugin suits WordPress site owners who need effective security measures without compromising site performance.

What it does well

  • Includes Two-Factor Authentication for enhanced login security
  • Cloud-powered scanning architecture for zero performance impact
  • User-friendly Site Health dashboard for monitoring security status
  • Toggle-based options for easy configuration and testing
  • Lightweight design that complements existing host defenses

Where it falls short

  • Some features may require a paid upgrade for full functionality
  • Limited information on specific performance metrics or user experiences

Verdict

SiteLock Security offers a practical approach to WordPress security with its cloud-based features and user-friendly interface. It is a solid option for users seeking to enhance their site's protection with minimal complexity.

From the developer

SiteLock's own description of SiteLock Security, lightly tidied.

🌟 Completely redesigned in Version 5.0 — now even stronger with 2FA in 5.1 🌟

The SiteLock WordPress plugin was recently rebuilt with three goals: make it faster, make it clearer and move the heavy work to the cloud. We built a cloudfirst architecture, modernized UI, expanded security controls and stripped out everything that didn’t need to be there. Our latest 5.1 release builds on that foundation with TwoFactor Authentication (2FA) to strengthen login security and give you tighter control over access.

The big changes:
– 🔒 Enhanced WordPress-specific hardening and login security controls
– ☁️ Cloud-powered scanning architecture for zero performance impact
– 🩺 New Site Health interface that shows you what matters in one view
– ⚡ Streamlined controls (fewer clicks to get protected)
– ✨ Modern codebase built for the WordPress you’re actually using today
– 🔢 Two-Factor Authentication (2FA) now available for stronger login protection

If you used the old plugin: this is a different tool. If you’re new: you’re starting with the cleanest, fastest version of the plugin.

Your website deserves protection that’s simple, fast and built for WordPress. SiteLock WordPress Security focuses on the everyday controls that matter most and helps you establish a secure baseline in minutes — WordPress-specific hardening, login protection with Two-Factor Authentication (2FA) and a clear Site Health dashboard that keeps you in control without slowing your site down. It’s lightweight, action-first protection that complements your host defenses: essential safeguards run inside WordPress while deeper checks happen securely in the SiteLock cloud. Skip heavy on-server scans and alert fatigue — run on-demand checks when you need extra assurance, so you can ship updates with confidence.

Security that grows with you

Our goal is straightforward: maintain a strong baseline with minimal overhead while giving you clear visibility and room to grow as your needs evolve.
And because security is never static, this plugin keeps pace. Two-Factor Authentication (2FA) is now available to strengthen login security with an extra layer of protection.

Commercial plugin

This plugin is free but offers additional paid commercial upgrades or support.

What’s included

WordPress Hardening: Cut common attack paths in just a few clicks

  • Disable directory listing
  • Restrict PHP execution in upload folders
  • Limit unsafe script types
  • Force strong configuration defaults to close risky gaps

All options are toggle-based and reversible — safe to enable, easy to test and lightweight on performance.

Login Security: Protect what matters most — your access

  • Two-Factor Authentication (2FA): Add a second layer of verification to protect admin access
  • Brute-force defense: Blocks repeated failed logins and temporarily locks abusive IPs
  • Password policy prompts: Encourage stronger credentials without breaking workflows
  • Session timeouts: Automatically end idle sessions to prevent account hijacks
  • Activity awareness: View recent logins and admin changes in the Activity Log

Site Health & Cloud Checks: Clarity without noise

  • Site Health Dashboard: Surface key signals in one view — WordPress hardening status, last scan timestamp and actionable indicators
  • Cloud Checks: Connect your free SiteLock account to enable recurring off-server checks (Webpage Scan, SSL Verification, Email Reputation and more)
  • Scan Now: Run on-demand checks after updates or changes for instant assurance — no heavy, always-on local scanners
  • Activity Log: Track what’s happening across your WordPress admin. See admin/login events at a glance making it easy to spot anomalies early and keep accountability clear

Why Choose SiteLock WordPress Security?

  • Lightweight by design: All high-impact protections, no unnecessary load
  • Real visibility: Know your security posture in seconds with Site Health
  • Cloud-powered assurance: Checks run off-server, protecting performance
  • Flexible setup: Use standalone or connect a SiteLock account for added layers
  • Strong login protection: Two-Factor Authentication (2FA) alongside brute-force defense and session controls
  • Trusted heritage: From the global leader in SMB website security backed by continuous innovation and research
  • Aligned to WordPress: Designed to stay out of your way and keep performance priorities intact

Read the full description on the official page →

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