shieldFree tool · no account required

Free Website Security Checker

Check a public website's SSL certificate, security headers, server fingerprint, and selected exposed ports with live evidence—free and without an account.

verifiedEvidence shown with sourcelock_openNo account requiredblockNo invented metrics
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Run a real check above

Submit a public URL, domain, or keyword. Novaverb will show only the evidence this tool can actually retrieve or measure.

Evidence model

Know what the result proves

Each free check separates measured evidence from interpretation, and interpretation from the deeper work available in a connected workspace.

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1. Source

Live TLS, HTTP header, and selected-port probes. The result identifies where its evidence came from.

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2. Boundary

This is a focused external probe, not a penetration test. It checks TLS, selected ports, response headers, and a visible server fingerprint only.

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3. Next action

Use the finding to verify a problem, then connect a workspace when you need history, monitoring, or site-wide analysis.

Website Security Scanner & Vulnerability Probing

Security is a direct Google ranking factor (HTTPS). A secure site protects user credentials, transaction details, and corporate data from malicious actors. Websites with weak security headers, expired SSL/TLS certificates, or exposed database ports face high risks of database leakage, malware infection, and organic traffic drops due to browser warning pages.

How to harden your website security

  • Implement HTTPS & HSTS: Ensure all traffic is encrypted via TLS 1.3, and use HTTP Strict Transport Security (HSTS) headers to enforce secure connections.
  • Declare Security Headers: Add Content-Security-Policy (CSP), X-Content-Type-Options, and Referrer-Policy headers to prevent cross-site scripting (XSS) and clickjacking attacks.
  • Close Exposed Database Ports: Ensure database ports (like 3306 for MySQL or 5432 for PostgreSQL) are closed to public traffic and only accessible via private networks or VPNs.

Security Checklist

SSL Certificate Validity

Always renew TLS certificates before they expire to prevent browsers from displaying scary warning screens to visitors.

Exposed Services threat

Ports like 22 (SSH), 21 (FTP), and 3389 (RDP) should never be exposed to public port scans without rate-limiting and keys.

Common questions

Website Security Checker FAQ

Is this tool free?

Yes. You can run the public check without creating an account. A connected workspace is required only for saved evidence, monitoring, and deeper product workflows.

Where does the result come from?

Live TLS, HTTP header, and selected-port probes. This is a focused external probe, not a penetration test. It checks TLS, selected ports, response headers, and a visible server fingerprint only.

Does Novaverb estimate missing numbers?

No. If the required evidence is unavailable, the tool returns an unavailable or incomplete state instead of inventing a metric.

What can I do after this free check?

Connect the target to a Novaverb workspace to keep evidence, run site-wide analysis, monitor changes, and move findings into an accountable workflow.