Security Headers helps site owners manage modern browser security headers from inside WordPress.

Features include:

Admin settings page under Settings > Security Headers
HSTS controls with preload warning
Referrer-Policy and X-Frame-Options settings
Permissions-Policy custom value field
Content-Security-Policy builder with Report-Only mode
Diagnostics screen showing configured headers
Test tool to fetch and inspect your live response headers
Import, export, and reset settings tools
Cleanup on uninstall

Why security headers important?

When auditing websites, security headers are frequently forgotten.

Although some may argue that website security is unrelated to SEO, it does become so when a site is compromised and search traffic completely disappears.

Everyone who publishes content online should pay special attention to security headers.

Getting hacked is not good. You lose traffic, customers and it’s a pain to resolve all the issues.

But good thing you’re smart and have searched for this plugin :).