Open
Cached
·
just now
81/100
SECURITY SCORE
Certificate Information
Subject
CN=*.google.jp
Issuer
C=US, O=Google Trust Services, CN=WR2
Valid From
October 13, 2025
Valid Until
January 05, 2026
61 days
Public Key
ECDSA
256 bit
(P-256)
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
38:7E:7C:38:46:B2:2F:F1:4F:A0:46:EE:FF:7A:51:FC:50:17:5B:D8:6E:A5:AF:AB:EF:05:57:DD:51:41:CE:BD
Alternative Names
Security Configuration
TLS Protocols
TLS 1.0
TLS 1.1
TLS 1.2
TLS 1.3
Forward Secrecy
Supported
(Modern clients use PFS)
Warnings
- • TLS 1.1 is deprecated and should be disabled
- • TLS 1.0 is deprecated and should be disabled
HTTP Security Headers
Status
Strict-Transport-Security
Missing
Not configured
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Missing
Not configured
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
- • Add Strict-Transport-Security header with max-age of at least 1 year
- • Add Content-Security-Policy header to prevent XSS attacks
- • Add X-Content-Type-Options: nosniff
- • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
- • 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
Recommendations
- • Consider using critical flag (flags=128) for stricter CAA enforcement
- • Consider adding 'iodef' records to receive notifications about unauthorized certificate issuance attempts
- • Consider adding 'issuewild' records to control wildcard certificate issuance