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SECURITY SCORE
Certificate Information
Subject
CN=teesom.com
Issuer
C=AT, O=ZeroSSL, CN=ZeroSSL RSA Domain Secure Site CA
Valid From
January 29, 2026
Valid Until
April 29, 2026
89 days
Public Key
RSA
4096 bit
Strong
Signature Algorithm
SHA384-RSA
SHA-256 Fingerprint
94:6A:A7:83:7F:C2:05:91:63:C7:33:72:F8:52:C3:63:9A:F2:59:55:4C:5B:50:CA:E8:80:4F:38:C0:DC:A4:B2
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
Missing
Not configured
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
- • Add Strict-Transport-Security header with max-age of at least 1 year
- • Add Content-Security-Policy header to prevent XSS attacks
- • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
- • Consider adding Permissions-Policy to control browser features
CAA Records (Certificate Authority Authorization)
CAA Records
Configured
(Restricts certificate issuance)
Current Issuer
Not Authorized
(Potential misconfiguration)
Wildcard CAs
CAA Issues
- • CRITICAL: Current certificate issuer 'C=AT, O=ZeroSSL, CN=ZeroSSL RSA Domain Secure Site CA' is NOT authorized by CAA records. Authorized CAs:
Recommendations
- • Consider adding 'iodef' records to receive notifications about unauthorized certificate issuance attempts