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SECURITY SCORE
Certificate Information
Subject
CN=satudora.jp
Issuer
C=JP, O=Japan Registry Services Co., Ltd., CN=JPRS Domain Validation Authority - G4
Valid From
July 02, 2025
Valid Until
July 31, 2026
188 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
ED:44:C9:9B:FB:13:0A:56:1C:D2:D2:D7:2D:CD:47:61:E8:CE:C9:9B:60:62:A6:4E:9E:3E:E8:6D:75:2A:D4:5C
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
Missing
Not configured
Content-Security-Policy
Good
default-src; frame-ancestors; frame-src; +11 more
default-src 'self' https:; frame-ancestors 'self'; frame-src 'self' https://www.googletagmanager.com https://challenges.cloudflare.com; script-src 'self' 'unsafe-inline' https:; style-src 'self' 'unsafe-inline' https:; img-src 'self' data: blob: https:; font-src 'self' data: https:; connect-src 'self' https:; worker-src 'self' blob:; object-src 'none'; form-action 'self'; base-uri 'none'; upgrade-insecure-requests; block-all-mixed-content
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
Permissions-Policy
Missing
Not configured
Recommendations
- • Add Strict-Transport-Security header with max-age of at least 1 year
- • Strengthen CSP by removing 'unsafe-eval'
- • Consider adding Permissions-Policy to control browser features
CAA Records (Certificate Authority Authorization)
CAA Records
Not Configured
(Any CA can issue certificates)
CAA Issues
- • No CAA records configured - any CA can issue certificates
Recommendations
- • Implement CAA records to restrict which CAs can issue certificates for your domain
- • This adds an extra layer of security against unauthorized certificate issuance
- • Example: Add CAA record 'example.com. CAA 0 issue "letsencrypt.org"'
- • Consider adding 'iodef' record to receive security incident reports