Max Harmony

Add NSA Header uses a list of keywords known to be sensitive to mass spying operations. It randomly selects a few of those keywords with each page request and includes them in an NSA-Keywords HTTP header. This introduces useless information to mass spying operations, reducing their effectiveness.
It is recommended that this be used only on WordPress sites that are only accessible via TLS.

Add NSA Header

Add NSA Header adds an NSA-Keywords HTTP header to reduce the effectiveness of mass spying operations.

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.

Add NSA Header vs HTTP Security Header