Proton Drive · Domain Security

Proton Me Domain Security

Domain security

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

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Transport & Host Security

proton.me
HTTPS: yes · TLS: TLSv1.3 · HSTS: yes · cert expires: Dec 1 13:13:51 2026 GMT

Domain (DNS/Email) Security

proton.me
DNSSEC: yes · SPF: yes · DMARC: yes (p=quarantine) · CAA: yes

Source

Domain Security

proton-me-domain-security.yml Raw ↑ 
generated: '2026-10-27'
method: probed
source: live DNS/TLS/HTTP probes of apis.yml + OpenAPI hosts
hosts:
- host: proton.me
  https: true
  tls_version: TLSv1.3
  cert_expires: Dec  1 13:13:51 2026 GMT
  hsts: true
  hsts_max_age: 31536000
domains:
- domain: proton.me
  dnssec: true
  caa:
  - 0 issue "letsencrypt.org"
  - 0 issue "sectigo.com"
  spf: true
  dmarc: true
  dmarc_policy: quarantine

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Tools for security posture

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