package middleware import "net/http" func SecurityHeadersMiddleware(w http.ResponseWriter, r *http.Request) { r.Header.Set("X-Frame-Options", "DENY") r.Header.Set("Content-Security-Policy", "default-src 'self'; connect-src *; font-src *; script-src-elem * 'unsafe-inline'; img-src * data:; style-src * 'unsafe-inline';") r.Header.Set("X-XSS-Protection", "1; mode=block") r.Header.Set("Strict-Transport-Security", "max-age=31536000; includeSubDomains; preload") r.Header.Set("Referrer-Policy", "strict-origin") r.Header.Set("X-Content-Type-Options", "nosniff") r.Header.Set("Permissions-Policy", "geolocation=(),midi=(),sync-xhr=(),microphone=(),camera=(),magnetometer=(),gyroscope=(),fullscreen=(self),payment=()") }