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93/100 SECURITY SCORE

Certificate Information

Subject
CN=aau.dk
Issuer
C=US, O=Let's Encrypt, CN=R13
Valid From
November 17, 2025
Valid Until
February 15, 2026 74 days
Public Key
RSA 2048 bit Adequate
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
A9:AB:90:B4:95:81:84:0F:EE:57:B3:77:B5:4A:7D:63:17:58:5D:3D:2D:E9:2F:CE:19:B4:E0:43:2A:9D:66:FD
Alternative Names

Security Configuration

TLS Protocols
TLS 1.2
Forward Secrecy
Limited (Check cipher configuration)
Warnings
  • TLS 1.3 is not supported (recommended)

HTTP Security Headers

Status
Strict-Transport-Security
Present
max-age=15768000; includeSubdomains; preload;
Content-Security-Policy
Good
default-src; font-src; script-src; +7 more
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Present
no-referrer, strict-origin-when-cross-origin
Permissions-Policy
Present
geolocation=(),midi=(),sync-xhr=(),microphone=(),camera=(),magnetometer=(),gyroscope=(),fullscreen=(self),payment=()
Recommendations
  • Increase HSTS max-age to at least 1 year and add includeSubDomains
  • Strengthen CSP by removing 'unsafe-eval'

CAA Records (Certificate Authority Authorization)

CAA Records
Configured (Restricts certificate issuance)
Current Issuer
Authorized (Matches CAA policy)
Recommendations
  • Consider adding 'iodef' records to receive notifications about unauthorized certificate issuance attempts

Subject Alternative Names

2 domains