Send Basic Security Headers
Adds common HTTP security headers to front-end responses: nosniff, same-origin framing, a strict referrer policy and a restrictive permissions policy.
WPIDE Team 6 installs
Snippet Library
Security snippets for WordPress
Snippets that harden WordPress: turn off XML-RPC, hide the version number, stop user enumeration, add security headers and block risky uploads. Small, reviewable changes for site owners who want fewer attack points without a heavy security plugin.
Allow Your Site to Be Embedded Only on Partner Domains
Replaces the usual same-site framing rule with a Content-Security-Policy frame-ancestors list, so your pages can be shown in iframes on the partner sites you name and nowhere else.
Content Security Policy Builder With Violation Reports
Sends a report-only Content Security Policy and collects the browser's violation reports, then lists every blocked source per directive under Tools > CSP Reports with a suggested policy you can enforce later.
Content Security Policy Header (Report-Only)
Sends a starter Content Security Policy in report-only mode, so you can see in the browser console what a strict policy would block before enforcing it.
Cross-Origin Opener Policy and Related Isolation Headers
Sends Cross-Origin-Opener-Policy, Origin-Agent-Cluster and X-Permitted-Cross-Domain-Policies headers on public pages, which stop other sites you link to or that open yours from reaching into your pages.
Enable HTTP Strict Transport Security (HSTS)
Tells browsers to always use HTTPS for your domain for one year. Only enable it once the whole site, including subdomains you use, works over HTTPS.
Nonce-Based Content Security Policy for Scripts
Adds a fresh random nonce to every script WordPress prints and sends a strict, nonce-based script policy (report-only by default), the modern way to block injected scripts.
Reject Requests for Unknown Host Names
Returns an error for requests whose Host header is not your site's domain, which blocks host header injection tricks (such as poisoned password reset links) and junk traffic aimed at your server's IP.
Security Headers for wp-admin and the Login Page
Sends nosniff, a strict referrer policy, a restrictive permissions policy and a cross-origin opener policy on dashboard and login pages, which front-end header snippets do not cover.
Site Health Check for Publicly Exposed Sensitive Files
Adds a Site Health test that checks whether files such as .env, debug.log, .git/HEAD and wp-config.php backups can be downloaded from your site by anyone, and flags them as critical.
Site Health Check for Security Headers
Adds a Site Health test that loads your homepage and reports which common security headers (HSTS, CSP, nosniff, framing, referrer and permissions policies) are missing.