Nova Shield - Cross-Domain Frontend Protection

The first WordPress security plugin that protects your frontend even when it lives on a different domain. Every other plugin (Wordfence, Sucuri, MalCare, Patchstack) only runs on the PHP server, which means they go blind the moment your frontend is React on Vercel or a static site on Cloudflare Pages. Nova Shield closes that gap.

The Blind Spot

WordPress security plugins run on the server. They scan PHP files, monitor the database, and block malicious requests, but when WordPress is a headless CMS and the frontend lives on a separate domain, the server-side plugin has zero visibility into what's happening in the browser. Whole categories of attacks live there instead: compromised third-party scripts, supply-chain attacks on npm packages, Magecart skimmers injected through a CDN, DOM XSS payloads riding in URL parameters. No PHP plugin has visibility into any of it. Nova Shield does.

7 Protection Layers

  • Injection Detection: real-time DOM monitoring watches for injected script, iframe, object, and embed tags
  • Integrity Monitoring: hashes every script and stylesheet and compares against a known-good manifest from WordPress
  • Client-Side Firewall: intercepts fetch and XMLHttpRequest calls to known bad domains and blocks form submissions to phishing sites
  • Secure Authentication: every request between the frontend agent and WordPress is cryptographically signed
  • Learning Mode: the first 24 hours collects a baseline without generating alerts, which prevents false positives
  • Violation Dashboard: filterable, paginated table of every detected violation inside the Nova Scan admin panel
  • Framework Agnostic: works with React, Next.js, Nuxt, Gatsby, Astro, SvelteKit, or plain static HTML

How It Works

Your visitors run the Shield agent, which is a single script tag under 9KB gzipped. When an attacker injects a malicious script, the next visitor who loads the page detects it and reports it back to WordPress. The attacker's browser settings are irrelevant.

No Other Plugin Does This

Cross-domain frontend monitoring, script injection detection, frontend integrity hashing, client-side firewall, securely authenticated reporting, headless architecture support, and framework-agnostic deployment. No other WordPress security plugin offers any of these.

Installation

Enable Shield in the Nova Scan admin panel, enter your frontend URL, and copy the auto-generated snippet into your frontend's head. Two lines of HTML. Shield auto-generates keys, fetches its config from WordPress, and starts monitoring immediately in learning mode for the first 24 hours.

Free Forever

Nova Shield is included free with Nova Scan. Enable it in the admin panel, paste two lines of HTML into your frontend, and your cross-domain architecture is protected.

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