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SECURITY SCORE
Certificate Information
Subject
CN=*.vaadin.com
Issuer
C=FR, O=Gandi SAS, CN=GandiCert
Valid From
May 19, 2025
Valid Until
June 19, 2026
225 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
89:58:C4:F1:AB:D1:33:C2:F3:B7:BE:69:15:B9:D8:D5:59:85:C0:42:5B:9E:F3:47:BE:BC:3C:45:89:DF:35:22
Alternative Names
Security Configuration
TLS Protocols
TLS 1.0
TLS 1.1
TLS 1.2
Forward Secrecy
Limited
(Check cipher configuration)
Warnings
- • TLS 1.3 is not supported (recommended)
- • 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