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:
Unknown Certificate Authority - the server's certificate is not trusted
Open
Cached
·
just now
18
Headers
HTTP Security Headers
Status
Strict-Transport-Security
Missing
Not configured
Content-Security-Policy
Basic
default-src; script-src; style-src; +7 more
default-src 'self'; script-src 'self' webstats.surf.nl *.mailplus.nl platform.twitter.com syndication.twitter.com cdn.syndication.twimg.com www.instagram.com www.google.com www.gstatic.com surfnl.containers.piwik.pro pretalx.surf.nl feedback.communicatie.surf.nl 'unsafe-inline' 'unsafe-eval' https://app.vwo.com https://d5phz18u4wuww.cloudfront.net/vis_opt.js https://dev.visualwebsiteoptimizer.com https://eu.frcapi.co; style-src 'self' 'unsafe-inline' static.mailplus.nl fonts.googleapis.com use.typekit.net p.typekit.net platform.twitter.com surfnl.containers.piwik.pro surfnl.piwik.pro https://app.vwo.com https://dev.visualwebsiteoptimizer.com https://eu.frcapi.com/; img-src http: https: surfnl.containers.piwik.pro surfnl.piwik.pro data:;; frame-src 'self' *.surf.nl openonderwijsapi.nl www.surfspace.nl surfspace.nl www.slideshare.net player.vimeo.com www.youtube.com www.youtube-nocookie.com surf.mediamission.nl platform.twitter.com syndication.twitter.com www.instagram.com www.facebook.com www.linkedin.com www.google.com https://surf.apnd.me/OWD23/program https://surf.apnd.me/ACUD23/program https://app.vwo.com *.edu.nl https://eu.frcapi.com/; child-src 'self' surf.mediamission.nl www.slideshare.net player.vimeo.com www.youtube.com www.youtube-nocookie.com surf.mediamission.nl platform.twitter.com syndication.twitter.com www.instagram.com www.facebook.com www.linkedin.com https://app.vwo.com; font-src 'self' fonts.gstatic.com surfnl.containers.piwik.pro surfnl.piwik.pro data:; connect-src 'self' surfnl.piwik.pro webstats.surf.nl surfnl.containers.piwik.pro surfnl.piwik.pro pretalx.surf.nl *.surf.nl https://app.vwo.com https://dev.visualwebsiteoptimizer.com https://eu.frcapi.com/; report-uri /report-csp-violation; upgrade-insecure-requests
X-Frame-Options
Good
SAMEORIGIN
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Present
same-origin
Permissions-Policy
Missing
Not configured
Recommendations
- • Add Strict-Transport-Security header with max-age of at least 1 year
- • Improve CSP by adding more specific directives and removing 'unsafe-inline'
- • Consider adding Permissions-Policy to control browser features
Performance Headers
1 headers
Vary
Performance
Cookie
Caching Headers
4 headers
Cache-Control
Caching
max-age=3600, public
Etag
Caching
"1766649274"
Expires
Caching
Sun, 19 Nov 1978 05:00:00 GMT
Last-Modified
Caching
Thu, 25 Dec 2025 07:54:34 GMT
Content Headers
3 headers
Content-Language
Content
nl
Content-Length
Content
262480
Content-Type
Content
text/html; charset=UTF-8
Server Headers
1 headers
Server
Server
nginx
CORS Headers
0 headers
No CORS headers found
Cookies Headers
0 headers
No cookies headers found
Other Headers
4 headers
Date
Other
Mon, 29 Dec 2025 20:40:15 GMT
X-Drupal-Cache
Other
HIT
X-Drupal-Dynamic-Cache
Other
MISS
X-Served-By
Other
prod-utr
Recommendations
Enable compression (gzip/brotli) to improve performance
Analysis completed in 1964ms