Examine source code of CyberCheck360

{
  "manifest_version": 2,
  "name": "CyberCheck360",
  "version": "1.4",
  "permissions": [
    "activeTab",
    "contextMenus",
    "storage",
    "tabs",
    "scripting",
    "https://fumkrz5fza.execute-api.eu-west-1.amazonaws.com/*"
  ],
  "background": {
    "scripts": [
      "functionality.js",
      "background.js"
    ],
    "persistent": false
  },
  "icons": {
    "16": "/imgs/Cybercheck360-Icon-Blue-16x16.png",
    "48": "/imgs/Cybercheck360-Icon-Blue-48x48.png",
    "128": "/imgs/Cybercheck360-Icon-Blue-128x128.png"
  },
  "browser_action": {
    "default_popup": "popup.html",
    "default_icon": {
      "16": "/imgs/Cybercheck360-Icon-Blue-16x16.png",
      "48": "/imgs/Cybercheck360-Icon-Blue-48x48.png",
      "128": "/imgs/Cybercheck360-Icon-Blue-128x128.png"
    }
  },
  "content_scripts": [
    {
      "matches": [
        "<all_urls>"
      ],
      "js": [
        "functionality.js",
        "content.js"
      ]
    }
  ],
  "options_page": "options.html",
  "web_accessible_resources": [
    "functionality.js",
    "indicators.html"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "ioc-extraction@cybercheck360.com"
    }
  }
}