SSL Verification Bypassed
The server's SSL certificate could not be verified. The analysis was completed using insecure mode. Data may be less reliable.
Reason:
Hostname Mismatch - certificate is issued for www.gbv.de, not for gbv.de
Open
Cached
·
just now
16
Headers
Detected Technologies from Headers
HTTP Security Headers
Status
Strict-Transport-Security
Present
max-age=15768000; includeSubDomains
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
Performance Headers
Connection
close
connection: close
Caching Headers
Expires
Sat, 01 Jan 2000 00:00:00 GMT
expires: Sat, 01 Jan 2000 00:00:00 GMT
Content Headers
Content-Language
de
Content-Length
25427
Content-Type
text/html;charset=utf-8
content-language: de content-length: 25427 content-type: text/html;charset=utf-8
Server Headers
Server
nginx
X-Powered-By
Zope (www.zope.dev), Python (www.python.org)
server: nginx x-powered-by: Zope (www.zope.dev), Python (www.python.org)
CORS Headers
No CORS headers found
Cookies Headers
Other Headers
Date
Wed, 29 Apr 2026 21:48:30 GMT
Via
waitress
X-Cache-Rule
plone.content.itemView
X-Cache-Status
MISS
date: Wed, 29 Apr 2026 21:48:30 GMT via: waitress x-cache-rule: plone.content.itemView x-cache-status: MISS
Recommendations
Enable compression (gzip/brotli) to improve performance
Add Cache-Control header to optimize caching
Consider removing X-Powered-By header to hide server technology