Open
Cached
·
just now
92/100
SECURITY SCORE
Certificate Information
Subject
CN=ethersys.fr
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
December 18, 2025
Valid Until
March 18, 2026
45 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
A3:83:13:85:5C:CD:C9:2C:9A:06:DD:A8:7A:08:70:22:07:3C:9C:93:9D:42:89:71:D1:DD:42:AD:F9:17:8C:91
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
Excellent
max-age=31536000; includeSubDomains; preload
Content-Security-Policy
Strong
default-src; frame-src; worker-src; +12 more
default-src 'none'; frame-src https://openbadgepassport.com/; worker-src 'self'; script-src 'nonce-CyP31' 'strict-dynamic'; script-src-elem 'self' 'nonce-CyP31'; style-src 'self'; style-src-elem 'self' 'sha256-IvIofnApvB2Qm9lRq6dWCCrW6xeoVpZesJOWhFlimfI='; img-src 'self'; connect-src 'self' 'nonce-CyP31' https://unpkg.com https://api.websitecarbon.com; object-src 'none'; font-src 'self'; base-uri 'self'; form-action 'self' https://api.ethersys.fr/; frame-ancestors 'none' ; manifest-src 'self'
X-Frame-Options
Excellent
DENY
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
- • 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