Documentation
Where to find the things HorizonShield publishes. Each link goes to a real, live surface.
Free tools
Six self-serve utilities. No signup, no rate-limit on signed-in customers.
- DNS lookup →A / AAAA / MX / TXT / CAA + SPF / DMARC / DKIM hygiene
- Header check →Grade HSTS / CSP / XFO / Permissions-Policy live
- TLS grader →Real handshake, real cert chain, real grade
- Port scanner →TCP-connect sweep across 24 common ports
- WHOIS / RDAP →Registrar, expiry, nameservers via RDAP
- Breach lookup →HaveIBeenPwned for emails, corpus signals for domains
Free scanner
One-shot multi-module scan combining DNS, TLS, headers, breach exposure, and website basics.
Learn
Free SOC training built around real workflows.
Product
What HorizonShield actually ships.
Trust & legal
Public posture documents.