--- before
+++ after
@@ -4,8 +4,9 @@
     "Referrer-Policy": "same-origin",
     "X-Content-Type-Options": "nosniff",
     "X-DNS-Prefetch-Control": "off",
-    "Content-Security-Policy": "object-src 'none'; base-uri 'self'; frame-ancestors 'self'",
-    "X-Frame-Options": "SAMEORIGIN"
+    "Content-Security-Policy": "default-src 'self'; script-src 'self'; style-src 'self' 'unsafe-inline'; img-src 'self' data:; connect-src 'none'; object-src 'none'; base-uri 'none'; frame-src 'none'; frame-ancestors 'self'; form-action 'none'",
+    "X-Frame-Options": "SAMEORIGIN",
+    "Permissions-Policy": "camera=(), microphone=(), geolocation=(), payment=(), usb=()"
   },
   "mimeTypes": {
     ".webmanifest": "application/manifest+json",