What does the SiteGuardian security scanner check?

The scanner checks SSL/TLS certificates, 6 security headers (HSTS, CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy), DNSSEC, email authentication (SPF, DKIM, DMARC), SMTP encryption, MTA-STS, DANE/TLSA, CAA records, and DNS exposure. Results are scored 0-100 with an A-F grade.

Is the security scanner free?

Yes, completely free. No account, no signup, no credit card needed. Enter any domain and get instant results.

How is the security score calculated?

The score is out of 100 points: Security Headers (25 pts), SSL/TLS (20 pts), Email Authentication (15 pts), DNS Security (15 pts), HTTPS Enforcement (10 pts), security.txt (5 pts), MTA-STS + TLS-RPT (5 pts), and Server Hardening (5 pts). Grade A = 90-100, B = 75-89, C = 60-74, D = 40-59, F = 0-39.

Which compliance frameworks does the scan map to?

Scan findings are mapped to GDPR, NIS2, CRA (Cyber Resilience Act), ISO 27001, SOC 2, PCI DSS, and other EU regulatory frameworks. Each finding shows which regulations it affects.

Where is the scan data processed?

All scans run from EU-hosted infrastructure in Germany. No data is transferred outside the EU. Scan results are cached temporarily and not stored permanently unless you create an account.

Gratuito — nessun account necessario

Controllo gratuito di sicurezza del sito web

Inserisci un dominio. Ottieni il voto di sicurezza, il punteggio e un dettaglio approfondito — in pochi secondi.

Controlliamo certificati SSL, header di sicurezza, DNSSEC, autenticazione e-mail, crittografia SMTP e molto altro.

Basato sui dati di 814,441+ siti web europei. Vedi il benchmark

Cosa controlliamo

Il tuo sito web viene scansionato lungo queste dimensioni di sicurezza. Ciascuna viene valutata in modo indipendente.

Header di sicurezza

25 pti

HSTS, CSP, X-Frame-Options, X-Content-Type, Referrer-Policy, Permissions-Policy

SSL/TLS Certificate

20 pti

Key strength, signature algorithm, chain depth, TLS version, HTTPS redirect

Autenticazione e-mail

15 pti

SPF, DKIM key strength, DMARC policy enforcement, MTA-STS, TLS-RPT, SMTP encryption

Sicurezza DNS

15 pti

DNSSEC validation, CAA records, DANE/TLSA, DoH consistency

security.txt

5 pti

Vulnerability disclosure contact per RFC 9116

Privacy del server

5 pti

No version disclosure, no X-Powered-By, restricted CORS headers

Enter a domain

Type any URL — we handle the rest. No login, no signup, no credit card.

We scan everything

SSL, headers, DNS, email auth, SMTP encryption — checked in seconds from our EU servers.

See your grade

A-to-F grade, 0-100 score, and detailed recommendations for every finding.

Una scansione evidenzia il problema. Il monitoraggio continuo lo previene.

Monitoraggio continuo — uptime, SSL, DNS, autenticazione email. Da 29 €*/mese.

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