Open
Cached
·
just now
94/100
SECURITY SCORE
Detected Technologies
Certificate Information
Subject
CN=docs.mobile.gemini.com
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
April 30, 2026
Valid Until
July 29, 2026
88 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
96:A4:72:E6:5E:0E:A1:3F:3A:8B:E3:7D:07:FA:33:60:36:86:18:18:AF:B7:4A:9C:BD:00:7D:93:F3:CE:B0:67
Alternative Names
Security Configuration
TLS Protocols
TLS 1.2
TLS 1.3
Forward Secrecy
Supported
(Modern clients use PFS)
HTTP Security Headers
Status
Strict-Transport-Security
Present
max-age=31536000; includeSubdomains; preload
X-Frame-Options
Excellent
deny
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Present
origin-when-cross-origin, strict-origin-when-cross-origin
Permissions-Policy
Missing
Not configured
Recommendations
- • Increase HSTS max-age to at least 1 year and add includeSubDomains
- • Strengthen CSP by removing 'unsafe-eval'
- • Consider adding Permissions-Policy to control browser features
CAA Records (Certificate Authority Authorization)
CAA Records
Configured
(Restricts certificate issuance)
Current Issuer
Authorized
(Matches CAA policy)
Authorized CAs
Wildcard CAs
Recommendations
- • Consider using critical flag (flags=128) for stricter CAA enforcement
- • Consider adding 'iodef' records to receive notifications about unauthorized certificate issuance attempts