Client-Side Malware & Skimmer Detection

Check Your Website for Client-Side Malware

Modern attacks don't always target your servers; they target your users directly. If a third-party analytics script or marketing widget you use gets compromised, attackers can inject JavaScript that steals credit card data directly from the user's browser.

FortPilot's headless browser fleet executes your website exactly like a real user. We monitor network requests, DOM mutations, and CPU usage heuristically to detect crypto-miners, form skimmers (Magecart), and obfuscated JavaScript redirects.

What is a Website Malware Scanner?

Unlike traditional antivirus software that scans server files, our client-side malware scanner focuses on the execution phase in the browser. It detects malicious activities that only trigger when a real user visits the site, ensuring your visitors remain safe.

Malware Threats We Detect

Magecart & Digital Skimmers

We monitor input fields on checkout pages. If a third-party script attempts to read credit card data and send it to an unauthorized domain, we instantly flag it.

Browser Crypto-Miners

We analyze CPU spikes and WebAssembly execution patterns to identify hidden scripts silently mining cryptocurrency using your visitors' devices.

Malicious Redirects

We detect obfuscated JavaScript designed to conditionally redirect mobile users or search engine crawlers to phishing or spam websites.

How to Fix Website Malware

If malware is detected, immediately identify the compromised script. If it's a third-party vendor (like an ad network), remove the script tag. If it's your own code, audit your CMS or server for unauthorized access, update all plugins, and consider implementing a strict Content-Security-Policy (CSP).

Website Malware Scanner FAQ

Does this scan my server files?

No, this is a dynamic application security test (DAST). We scan the final HTML and JavaScript rendered in the browser, which is the most accurate way to detect supply chain attacks.

Can it detect zero-day malware?

Yes. By using behavioral heuristics (e.g., monitoring network exfiltration and CPU usage) rather than static signatures, we catch novel malware payloads.

Will scanning slow down my website?

No. Our headless browsers load your site exactly like a regular visitor would. We do not disrupt your actual users' experience.