How to Scan Your Website for Malware (Free Tools)

To scan your website for malware for free, tools like Sucuri SiteCheck, VirusTotal, and Google Safe Browsing let you paste your URL and get a diagnosis in seconds. If the external scanner comes up clean but you're still suspicious, a server-level scanner (such as Wordfence for WordPress) inspects your actual files directly.

This guide covers the best free tools available, how to read their results, and exactly what to do if they find an infection.

Warning Signs Your Site May Be Infected

Before you scan, check whether any of these symptoms are already present:

• Google shows a "This site may harm your computer" warning in search results.
• Your hosting provider suspended the account for malicious activity.
• Visitors report being redirected to strange pages or seeing unexpected ads.
• Files or admin users appear in your dashboard that you didn't create.
• The site loads unusually slowly for no apparent reason (possible cryptomining).
• Google Search Console reports spam URLs indexed under your domain.

Any one of these is reason enough to run a scanner immediately.

Free Tools to Scan Your Website for Malware

1. Sucuri SiteCheck

URL: sitecheck.sucuri.net

The most comprehensive free external scanner available. It analyzes your site's rendered HTML for known malicious code patterns, checks your domain against major blacklists (Google, McAfee, PhishTank, and others), and looks for injected spam content in the visible output.

Limitation: being external, it cannot see the PHP files on your server — only what a browser (or a bot) sees. Dormant malware or infections that target only certain visitors may slip through.

2. VirusTotal

URL: virustotal.com

Enter your URL and VirusTotal scans it with over 90 antivirus and web-reputation engines simultaneously. It's the fastest way to get a second opinion when Sucuri finds nothing but Google is still showing alerts.

3. Google Safe Browsing

URL: transparencyreport.google.com/safe-browsing/search

Check whether your domain is on Google's own blacklist — the same list that triggers the red warning screen in Chrome and the safety alerts in search results. If you appear here, you need to clean the site and file a review request in Search Console.

4. MalCure WebScan

A useful alternative for WordPress sites. It checks plugins, themes, and core files against known malware signatures and flags unauthorized modifications.

5. Wordfence (WordPress Plugin)

If your site runs on WordPress, the free Wordfence plugin includes a server-level scanner that compares every core, plugin, and theme file against the official WordPress repository versions. It detects modifications, backdoors, and code injections that external scanners simply can't see.

How to Read the Results

Not every finding carries the same weight. Here's how to interpret the output correctly:

• Clean across all engines: a good sign, but not an absolute guarantee. Recent malware variants may not yet be in the signature databases.
• 1–2 engines flag as suspicious: likely a false positive, especially with legitimate advertising scripts. Cross-check against Sucuri and Google Safe Browsing.
• 3 or more engines flag it, or Google marks the site: treat this as confirmation — the site is compromised.
• Obfuscated code detected: look for strings like eval(base64_decode(...)) or document.write(unescape(...)) in your PHP or JS files — classic signatures of injected malware.

What to Do If You Find Malware

If a scanner confirms an infection, act in this order:

1. Take a snapshot of the infected site (without activating it) for forensic analysis later.
2. Change all passwords: hosting control panel, FTP, database, CMS admin, and the email address associated with the domain.
3. Restore from a clean backup taken before the infection if one is available.
4. If no clean backup exists, manually remove the malicious files identified by the scanner and reinstall the CMS core from scratch.
5. Update everything — CMS core, all plugins, and all themes to their latest versions.
6. Request a review in Google Search Console if your domain was flagged as dangerous.

For ongoing protection — not just one-time cleanup — consider hosting with active security monitoring that catches threats before they ever affect your visitors.

Find more web security guidance in our SSL and web security section.

Key Takeaways

• Sucuri SiteCheck and VirusTotal are the fastest first step — free, no installation required.
• External scanners only see public-facing content; detecting backdoors on the server requires a file-level scanner like Wordfence.
• If Google has flagged your site, every hour of delay causes additional ranking damage and erodes visitor trust.
• Cleaning without changing passwords and updating software is temporary — attackers will reinfect through the same vulnerability.
• A recent backup is your best insurance: it lets you restore in minutes instead of cleaning for hours.

Already seeing warnings, or want to prevent them before they happen? Explore elenlace.com's secure hosting plans with daily backups and active malware monitoring included.

FAQ

How often should I scan my site?

At a minimum, once a month if you don't have automated monitoring. If you run an online store or handle customer data, weekly scans — or a continuous server-level scanner — are the right standard. Automated attacks don't keep business hours.

Can Sucuri SiteCheck scan password-protected pages?

Not directly. External scanners analyze only publicly accessible URLs. For content behind authentication you need a server-installed scanner like Wordfence, which has direct access to the filesystem regardless of login requirements.

Can malware on my site infect my visitors?

Yes. The most common infection types that harm visitors include drive-by downloads (malware downloaded just by visiting the page), injected phishing forms, and redirects to fraudulent sites. That's why acting immediately after a scanner confirms an infection is so important.

Can I scan a site I don't own?

With public tools like Sucuri SiteCheck or VirusTotal, yes — they only analyze the publicly accessible content that any browser can reach. These tools are designed precisely so that anyone can check a site's reputation before visiting it.

Further reading

Other providers and guides worth comparing:

• HubSpot
• IONOS
• GoDaddy