Cosign · Domain Security

Cosign Domain Security

Domain security

Domain security posture for Cosign, probed live across 3 host(s) and 1 registrable domain(s). 3 host(s) serve HTTPS (up to TLSv1.3); 2 advertise HSTS. Email/DNS controls: DNSSEC absent, SPF present, DMARC present (p=reject).

Apache 2.0AttestationsCLICode SigningContainersFulcioGoKeylessOCIOIDCOpen SourceRekorSigstoreSupply ChainTransparency LogVerification

Transport & Host Security

www.sigstore.dev
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Aug 11 20:53:50 2026 GMT
docs.sigstore.dev
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Aug 11 20:33:45 2026 GMT
rekor.sigstore.dev
HTTPS: yes · TLS: TLSv1.3 · HSTS: no · cert expires: Sep 2 10:53:19 2026 GMT

Domain (DNS/Email) Security

sigstore.dev
DNSSEC: no · SPF: yes · DMARC: yes (p=reject) · CAA: yes

Source

Domain Security

Raw ↑ 
generated: '2026-07-11'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: www.sigstore.dev
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 11 20:53:50 2026 GMT
  hsts: true
  hsts_max_age: 31536000
- host: docs.sigstore.dev
  https: true
  tls_version: TLSv1.3
  cert_expires: Aug 11 20:33:45 2026 GMT
  hsts: true
  hsts_max_age: 31536000
- host: rekor.sigstore.dev
  https: true
  tls_version: TLSv1.3
  cert_expires: Sep  2 10:53:19 2026 GMT
  hsts: false
domains:
- domain: sigstore.dev
  dnssec: false
  caa:
  - 0 iodef "mailto:security@sigstore.dev"
  - 0 issue "letsencrypt.org"
  - 0 issue "pki.goog"
  spf: true
  dmarc: true
  dmarc_policy: reject