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SECURITY SCORE
Certificate Information
Subject
CN=desec.io
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
December 17, 2025
Valid Until
March 17, 2026
63 days
Public Key
RSA
2048 bit
Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
E4:F5:36:F5:20:EF:E4:88:A7:30:D0:B8:85:A4:D8:9C:8F:E3:39:4B:1C:35:D8:18:1C:24:76:C1:17:F0:F6:AD
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
Basic
default-src; frame-src; connect-src; +9 more
default-src 'self'; frame-src 'none'; connect-src 'self'; font-src 'self' data:; img-src 'self' data:; media-src data:; script-src 'self' 'unsafe-eval' 'sha256-MS6/3FCg4WjP9gwgaBGwLpRCY6fZBgwmhVCdrPrNf3E=' 'sha256-tQjf8gvb2ROOMapIxFvFAYBeUJ0v1HCbOcSmDNXGtDo=' 'sha256-VA8O2hAdooB288EpSTrGLl7z3QikbWU9wwoebO/QaYk=' 'sha256-+5XkZFazzJo8n0iOP4ti/cLCMUudTf//Mzkb7xNPXIc='; style-src 'self' 'unsafe-inline'; base-uri 'self'; frame-ancestors 'none'; block-all-mixed-content; form-action 'none';
X-Frame-Options
Excellent
deny
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Good
strict-origin-when-cross-origin
Permissions-Policy
Missing
Not configured
Recommendations
- • Improve CSP by adding more specific directives and removing 'unsafe-inline'
- • Consider adding Permissions-Policy to control browser features
CAA Records (Certificate Authority Authorization)
CAA Records
Configured
(Restricts certificate issuance)
Current Issuer
Authorized
(Matches CAA policy)
Authorized CAs
letsencrypt.org
; accounturi=https://acme-v02.api.letsencrypt.org/acme/acct/1909605
Incident Reporting
mailto:[email protected]
Recommendations
- • Consider adding 'issuewild' records to control wildcard certificate issuance