sawrus Skill: HTTP Security Headers
When to load
When configuring web servers, API gateways, or reviewing HTTP responses.
Required Headers
add_header Strict-Transport-Security "max-age=31536000; includeSubDomains; preload" always;
add_header X-Content-Type-Options "nosniff" always;
add_header X-Frame-Options "DENY" always;
add_header Referrer-Policy "strict-origin-when-cross-origin" always;
add_header Permissions-Policy "camera=(), microphone=(), geolocation=()" always;
add_header Content-Security-Policy "
default-src 'self';
script-src 'self' 'nonce-{NONCE}';
style-src 'self' 'unsafe-inline';
img-src 'self' data: https://cdn.mycompany.com;
connect-src 'self' https://api.mycompany.com;
frame-ancestors 'none';
" always;
API-Specific
- Remove:
X-Powered-By,Server(information disclosure) - Add:
X-Request-ID(tracing),Cache-Control: no-store(auth responses) - CORS: Never
Access-Control-Allow-Origin: *for credentialed requests