Maxime F.

Guerric MERLE

Nexsol Technologies

Victor Lago de Lira

The WordSentinel plugin by Nexsol Technologies Sàrl enhances your WordPress website’s security by automatically applying and managing HTTP security headers — including Content Security Policy (CSP) — while providing live security analysis powered by Mozilla Observatory.
Unlike simple header managers, WordSentinel actively helps you understand, measure, and improve your site’s protection. 
It provides clear dashboards, actionable insights, and real-time grading so you can reinforce your headers with confidence — no deep technical knowledge required.
<h4>What WordSentinel Does</h4>
WordSentinel helps protect your WordPress website against common web vulnerabilities such as: 
– Cross-Site Scripting (XSS) 
– Clickjacking attacks 
– Content injection and mixed content issues 
– Insecure resource loading (scripts, iframes, styles)
It does so by implementing a complete and configurable set of browser-level security headers, giving you granular control over each directive.
In addition, it connects securely to Mozilla Observatory to scan your site and assign a security grade (A+ to F), helping you benchmark your configuration and understand what needs improvement.
<h4>Key Features</h4>
<ul>
<li>
Comprehensive HTTP Header Management 
Easily configure headers such as:
<ul>
<li>Content Security Policy (CSP) </li>
<li>Strict-Transport-Security (HSTS) </li>
<li>X-Frame-Options </li>
<li>Referrer-Policy </li>
<li>X-Content-Type-Options </li>
<li>Permissions-Policy </li>
</ul>
</li>
<li>
Real-Time Security Analysis 
Instantly scan your site via Mozilla Observatory and get a visual security grade. 
The plugin automatically handles rate limits with built-in cooldown protection.
</li>
<li>
Advanced CSP Management 
Create, test, and refine your CSP rules dynamically. 
WordSentinel now supports automatic hash generation for inline scripts and styles, improving both flexibility and security.
</li>
<li>
Smart License and Subscription System 
The free version covers essential headers and analysis. 
Premium users unlock advanced CSP tools, automatic reports, and custom integrations. 
Licenses are securely validated through Nexsol’s API and cached locally for 24 hours.
</li>
<li>
Optimized for Local and Production Environments 
Automatically detects if you are running on localhost and disables API calls for safe testing.
</li>
<li>
Performance and Privacy First 
WordSentinel is lightweight, privacy-respecting, and runs entirely within WordPress. 
No telemetry, analytics, or tracking are ever collected.
</li>
<li>
Multilingual and Accessible Interface 
Translated into six languages with an adaptive design inspired by Mozilla’s clean security aesthetic.
</li>
</ul>
<h4>Why Choose WordSentinel?</h4>
<ul>
<li>Easy setup — no coding skills required </li>
<li>Combines security headers and observatory analysis in one plugin </li>
<li>Works seamlessly with most WordPress security and caching plugins </li>
<li>Developed and maintained by Nexsol Technologies, a Swiss-based IT company </li>
<li>Transparent, privacy-respecting, and GPL-licensed</li>
</ul>
WordSentinel merges modern web security standards with a simple and intuitive configuration experience — making it a must-have for both developers and site owners who care about protection and compliance.
<h3>External Services and API Usage</h3>
WordSentinel securely connects to a small number of external APIs to perform license validation and site analysis:
<ul>
<li>
Mozilla Observatory API – Used to analyze your website’s HTTP headers and generate a public security grade. 
Data sent: only your site’s public URL. 
Service: https://observatory.mozilla.org/api/
</li>
<li>
Nexsol License Validation API – Used to verify premium licenses and maintain secure feature access. 
Data sent: license key only. 
Service: https://api.nexsol-tech.ch/wordsentinel/licenses
</li>
<li>
Nexsol Public Key API – Used to securely retrieve the public keys required for validating license signatures. 
Data sent: none. 
Service: https://api.nexsol-tech.ch/wordsentinel/certs
</li>
</ul>
All requests are transmitted securely via HTTPS. 
WordSentinel never sends personal information, usage analytics, or tracking data of any kind.
<h3>Languages Supported</h3>
<ul>
<li>English (default)</li>
<li>Français (fr_FR)</li>
<li>Deutsch (de_DE)</li>
<li>Italiano (it_IT)</li>
<li>Español (es_ES)</li>
<li>Português Brasileiro (pt_BR)</li>
</ul>
<h3>License</h3>
This plugin is licensed under the GPLv2 or later. 
See the GPLv2 License for details: https://www.gnu.org/licenses/gpl-2.0.html
<h3>Support</h3>
For documentation, updates, and premium features, visit https://nexsol-tech.ch/wordsentinel

WordSentinel

Secure your WordPress website with advanced HTTP headers, intelligent CSP management, and integrated Mozilla Observatory security analysis.

MOHIT GOYAL

HTTP Security Header helps protect your WordPress site by adding critical HTTP headers to each response — with no code required. These headers provide additional layers of protection against attacks such as cross-site scripting (XSS), clickjacking, content injection, and resource leaks.
This plugin offers a modern, responsive admin dashboard with validation, fallback safety, and full control over each header’s default or custom value.
Features Include: 
– Visual toggles for enabling/disabling headers 
– Option to use default or custom header values 
– Secure fallback if a header is misconfigured 
– Integrated header validation 
– Support for all major browser-supported headers 
– Nonce-based saving and admin notices 
– WP Multisite compatible 
– “Disable All” and “Reset to Important Headers” actions 
– Per-header input validation with real-time error fallback
Supported Headers: 
* Strict-Transport-Security (HSTS) 
* X-Frame-Options 
* X-Content-Type-Options 
* Referrer-Policy 
* Content-Security-Policy 
* Permissions-Policy 
* X-XSS-Protection 
* X-Permitted-Cross-Domain-Policies 
* Expect-CT 
* Cross-Origin-Opener-Policy (COOP) 
* Cross-Origin-Resource-Policy (CORP) 
* Cross-Origin-Embedder-Policy (COEP)
<h3>Features</h3>
<ul>
<li>Lightweight and performance-focused</li>
<li>No front-end impact</li>
<li>Choose default or custom header values</li>
<li>Secure validation and auto-fallbacks</li>
<li>Seamless plugin compatibility (e.g. WP Rocket)</li>
<li>Fully translation-ready and i18n-compliant</li>
<li>Nonce-protected admin save actions</li>
<li>Optional reset-to-defaults support</li>
<li>Reset or disable all headers with one click</li>
</ul>

HTTP Security Header


I recently integrated the Security Header plugin into my WordPress site, and it has significantly improved my website's security posture. The user-friendly interface made it easy to enable essential HTTP security headers with just a few clicks. 


Essential for Enhancing Website Security

Add and manage essential HTTP security headers with ease. Protect your WordPress site from XSS, clickjacking, and other common vulnerabilities.

WordSentinel vs HTTP Security Header