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SECURITY SCORE
Certificate Information
Subject
CN=dot-foretagsutbildning.se
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
September 10, 2025
Valid Until
December 09, 2025
25 days
Public Key
RSA
3072 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
FE:00:22:EC:CD:7B:B9:79:AD:A2:38:6D:0D:89:46:A2:83:2E:DF:76:45:BD:B6:1D:DF:4A:4C:DD:40:64:C4:45
Alternative Names
Security Configuration
TLS Protocols
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
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