Examine source code of ZBeacon Transmitter

{
  "manifest_version": 2,
  "name": "ZBeacon Transmitter",
  "short_name": "ZBeacon",
  "author": "anon33",
  "description": "Fight back against surveillance",
  "version": "1.0.5",
  "homepage_url": "https://zbeacon.glitch.me/",
  "browser_specific_settings": {
    "gecko": {
      "id": "{6f2498ff-a3b6-4891-a614-12a825d4efcf}"
    }
  },
  "browser_action": {
    "default_icon": {
      "32": "icons/ext.png",
      "64": "icons/ext.png",
      "128": "icons/ext.png",
      "256": "icons/ext.png"
    },
    "default_title": "ZBeacon Transmitter",
    "default_popup": "manual.html"
  },
  "icons": {
    "32": "icons/ext.png",
    "64": "icons/ext.png",
    "128": "icons/ext.png",
    "256": "icons/ext.png"
  },
  "permissions": [
    "activeTab",
    "storage",
    "tabs",
    "webRequest",
    "webRequestBlocking",
    "<all_urls>",
    "history",
    "webNavigation",
    "http://*/*",
    "https://*/*",
    "management",
    "unlimitedStorage",
    "browsingData",
    "clipboardWrite",
    "proxy",
    "cookies",
    "dns"
  ],
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "content_scripts": [
    {
      "all_frames": true,
      "js": [
        "zbeacon.js"
      ],
      "matches": [
        "http://*/*",
        "https://*/*",
        "<all_urls>"
      ],
      "match_about_blank": false,
      "run_at": "document_start"
    }
  ],
  "content_security_policy": "default-src 'none'; style-src 'unsafe-inline'; object-src 'self'; img-src 'self' data:; script-src 'self'; frame-src https:; connect-src https://zbeacon-proxy-1.glitch.me https://zbeacon-proxy-2.glitch.me https://zbeacon-proxy-3.glitch.me https://zbeacon-proxy-4.glitch.me;"
}