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SECURITY SCORE
Certificate Information
Subject
CN=caomingjun.com
Issuer
C=US, O=Google Trust Services, CN=WE1
Valid From
December 05, 2025
Valid Until
March 05, 2026
46 days
Public Key
ECDSA
256 bit
(P-256)
Adequate
Signature Algorithm
ECDSA-SHA256
SHA-256 Fingerprint
52:49:EB:D6:DD:B6:92:E3:FD:5C:43:08:95:71:AB:3B:3C:07:AB:13:45:00:38:78:D2:F1:AD:8C:4B:44:22:9C
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
Present
max-age=15552000; includeSubDomains
Content-Security-Policy
Good
base-uri; default-src; style-src; +6 more
base-uri 'none';default-src 'self';style-src 'self' 'unsafe-inline';script-src analytics.caomingjun.com https://wiki.caomingjun.com 'nonce-5558baf5a9bc8a52d02a5c327b7c5c75';media-src * data: blob:;img-src * data: blob:;frame-src * data:;object-src https://wiki.caomingjun.com 'self';connect-src *
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
no-referrer
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
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