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SECURITY SCORE
Certificate Information
Subject
CN=imreboersma.nl
Issuer
C=US, O=Google Trust Services, CN=WE1
Valid From
November 29, 2025
Valid Until
February 27, 2026
81 days
Public Key
ECDSA
256 bit
(P-256)
Adequate
Signature Algorithm
ECDSA-SHA256
SHA-256 Fingerprint
F9:66:F3:16:CA:3E:92:34:E5:28:EC:FC:53:27:28:59:A0:D4:F3:8A:D3:31:EA:19:0B:0F:CE:49:53:D5:49:9D
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
Present
max-age=31556926
Content-Security-Policy
Strong
default-src; style-src; font-src; +10 more
default-src 'self'; style-src 'self' https://fonts.googleapis.com data: 'sha256-47DEQpj8HBSa+/TImW+5JCeuQeRkm5NMpJWZG3hSuFU='; font-src 'self' https://fonts.gstatic.com; connect-src 'self' https://firestore.googleapis.com; script-src 'none'; img-src 'self'; frame-src 'none'; object-src 'none'; base-uri 'self'; form-action 'self'; require-trusted-types-for 'script'; script-src-elem 'self'; frame-ancestors 'none';
X-Frame-Options
Excellent
DENY
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
- • Increase HSTS max-age to at least 1 year and add includeSubDomains
- • 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
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