ProtonMail
protonmail.com
71%
Security Score
7
Failed
17
Passed
24
Total Checks
Security Checks (24)
What We Check on ProtonMail
TLS / HTTPS Security
We verify that protonmail.com uses HTTPS with a valid TLS certificate, modern cipher suites, and proper HSTS configuration to protect data in transit.
Security Headers
We check whether protonmail.com sends critical headers like Content-Security-Policy, X-Frame-Options, and Permissions-Policy to defend against XSS and clickjacking.
Content Security
We scan protonmail.com for mixed content, vulnerable JavaScript libraries, exposed admin panels, and information disclosure risks.
DNS & Email Security
We validate SPF, DKIM, and DMARC records for protonmail.com, check DNSSEC, and test for subdomain takeover vulnerabilities.
Scan Your Own Website
See how your site compares to ProtonMail. Run a free security scan with 62 checks and get actionable fix instructions.
Results in 1–3 minutes · Free · No signup required