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SECURITY SCORE
Certificate Information
Subject
CN=dozainer.org
Issuer
C=US, O=Let's Encrypt, CN=E7
Valid From
November 13, 2025
Valid Until
February 11, 2026
40 days
Public Key
ECDSA
256 bit
(P-256)
Adequate
Signature Algorithm
ECDSA-SHA384
SHA-256 Fingerprint
A2:5A:07:15:38:4A:66:12:3E:CD:16:F0:E9:D9:77:96:39:73:69:5C:A1:06:8D:7F:27:EE:00:6E:F9:56:03:A2
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
Missing
Not configured
Content-Security-Policy
Good
upgrade-insecure-requests; default-src; style-src; +3 more
upgrade-insecure-requests; default-src 'self'; style-src 'self' 'unsafe-inline'; script-src 'self' 'unsafe-inline'; object-src 'none'; img-src 'self' data:;
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Present
interest-cohort=()
Recommendations
- • Add Strict-Transport-Security header with max-age of at least 1 year
- • Strengthen CSP by removing 'unsafe-eval'
- • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
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