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SECURITY SCORE
Certificate Information
Subject
CN=gen-t.science
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
October 02, 2025
Valid Until
December 31, 2025
47 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
F5:B3:B9:DC:6C:25:E9:89:47:B1:25:F0:FA:7F:5C:44:47:33:04:94:BD:68:38:23:E2:99:CA:AC:9A:CC:34:50
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
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