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.
Block Passwords Found in Known Data Breaches
Checks new passwords against the Have I Been Pwned database of breached passwords when users change or reset them, and asks for a different one if it appears there.
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.
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.
Prevent Reusing Any of the Last 5 Passwords
Remembers the last five password hashes of each user and refuses a new password that matches one of them, on the profile screen and on password reset.
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.