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See What Attackers
See When They Look at You

Enter your domain name and we'll run an Internet-facing scan in seconds. It checks the same things attackers check before they target your organization - email authentication, SSL certificates, open services, and known vulnerabilities visible from the outside. No account, no sign-up, no commitment.

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Enter your domain above and click Run Free Scan

Email AuthenticationDMARC, SPF, and DKIM configuration - do your emails pass authentication checks?
SSL/TLS CertificatesAre your certificates valid, properly configured, and not about to expire?
Open ServicesWhat services are visible from the Internet that might not need to be?
Known VulnerabilitiesPublicly known issues associated with the software versions your site exposes.
DNS ConfigurationDNS misconfigurations that could be exploited for phishing or traffic hijacking.
Security HeadersHTTP security headers that protect visitors from common web attacks.

This free scan covers your external exposure only - what's visible from the Internet. A full ThreeShield assessment goes much deeper: internal controls, cloud configuration, access management, compliance gaps, and a lot more.

Talk to Us About a Full Assessment