HTTP Headers: sierraclub.org

Security score: 40/100

🛡️ Security Headers

Header	Status
Strict-Transport-Security	❌ Missing
Content-Security-Policy	❌ Missing
X-Content-Type-Options	✅ Present
X-Frame-Options	✅ Present
X-XSS-Protection	❌ Missing

📋 All Response Headers

Cache-Control
Content-Language
Content-Security-Policy-Report-Only
Content-Type
Date
Etag
Expires
Last-Modified
Referrer-Policy
Set-Cookie
Strict-Transport-Security
Traceresponse
Vary
X-CDN
X-Content-Type-Options
X-Debug-Info
X-Drupal-Cache
X-Drupal-Dynamic-Cache
X-Frame-Options
X-Generator
X-Iinfo
X-Platform-Cluster
X-Platform-Processor
X-Platform-Router
X-Ua-Compatible

ℹ️ About HTTP Security Headers

Strict-Transport-Security (HSTS) forces browsers to use HTTPS. Content-Security-Policy (CSP) prevents XSS attacks by controlling which resources can load. X-Content-Type-Options stops MIME-type sniffing. X-Frame-Options blocks clickjacking by preventing iframe embedding.

sierraclub.org's security score of 40/100 reflects how many of these protective headers are configured. Higher scores indicate better defense against common web attacks.

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