Open
Cached
·
just now
14
Headers
HTTP Security Headers
Status
Strict-Transport-Security
Good
max-age=31536000; includeSubDomains;
Content-Security-Policy
Missing
Not configured
X-Frame-Options
Missing
Not configured
X-Content-Type-Options
Good
nosniff
Referrer-Policy
Missing
Not configured
Permissions-Policy
Missing
Not configured
Recommendations
- • Consider adding 'preload' to HSTS for maximum security
- • Add Content-Security-Policy header to prevent XSS attacks
- • Add X-Frame-Options: DENY or SAMEORIGIN to prevent clickjacking
- • Add Referrer-Policy header (recommended: strict-origin-when-cross-origin)
- • Consider adding Permissions-Policy to control browser features
Performance Headers
2 headers
Connection
Performance
close
Vary
Performance
Accept-Encoding
Caching Headers
1 headers
Etag
Caching
W/"9-0gXL1ngzMqISxa6S1zx3F4wtLyg"
Content Headers
2 headers
Content-Length
Content
9
Content-Type
Content
text/plain; charset=utf-8
Server Headers
2 headers
Server
Server
nginx/1.28.0
X-Powered-By
Server
CourseKey Inc.
CORS Headers
4 headers
Access-Control-Allow-Credentials
Cors
true
Access-Control-Allow-Headers
Cors
Origin, X-Requested-With, Content-Type, Accept, CKAuth
Access-Control-Allow-Origin
Cors
https://portal.thecoursekey.com
Access-Control-Expose-Headers
Cors
Link
Cookies Headers
0 headers
No cookies headers found
Other Headers
1 headers
Date
Other
Sat, 24 Jan 2026 10:42:32 GMT
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