Open
Cached
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just now
90/100
SECURITY SCORE
Certificate Information
Subject
CN=*.heinlein-support.de
Issuer
C=US, O=DigiCert Inc, OU=www.digicert.com, CN=Thawte TLS RSA CA G1
Valid From
March 11, 2025
Valid Until
April 10, 2026
141 days
Public Key
RSA
4096 bit
Strong
Signature Algorithm
SHA256-RSA
SHA-256 Fingerprint
D7:CF:E7:12:4B:E6:C2:02:AC:12:2B:E6:D3:B0:67:AA:50:62:04:C6:74:E7:3E:D6:21:9A:1F:2F:B3:A6:4E:08
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
Present
max-age=15768000; includeSubDomains; preload
Content-Security-Policy
Basic
connect-src; font-src; frame-src; +9 more
connect-src 'self' https://matomo.heinlein-support.de https://numbers.heinlein-support.de; font-src 'self'; frame-src 'self' https://www.youtube.com/; img-src 'self' https://cdn.redoc.ly/redoc/ https://i.ytimg.com/ data: 'unsafe-eval'; object-src 'self'; script-src 'self' 'unsafe-inline' https://matomo.heinlein-support.de https://numbers.heinlein-support.de https://cdnjs.cloudflare.com; style-src 'self' 'unsafe-inline' https://cdnjs.cloudflare.com; worker-src 'self' blob:; base-uri 'self'; form-action 'self'; frame-ancestors 'self'; report-uri https://www.heinlein-support.de/report-uri/enforce
X-Frame-Options
Good
SAMEORIGIN
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
- • Improve CSP by adding more specific directives and removing 'unsafe-inline'
- • 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
Configured
(Restricts certificate issuance)
Current Issuer
Authorized
(Matches CAA policy)
Authorized CAs
Incident Reporting
mailto:[email protected]
mailto:[email protected]
Recommendations
- • Consider using critical flag (flags=128) for stricter CAA enforcement
- • Consider adding 'issuewild' records to control wildcard certificate issuance