Examine source code of Anqa Detector

{
  "manifest_version": 3,
  "name": "Anqa Detector",
  "version": "1.0.5",
  "description": "Phishing Detector",
  "author": "plag@anqa-itsecurity.de",
  "icons": {
    "32": "images/Anqa_Bilmarke32.png",
    "48": "images/Anqa_48.png",
    "128": "images/Anqa_128.png"
  },
  "action": {
    "default_icon": {
      "32": "images/Anqa_Bilmarke32.png",
      "48": "images/Anqa_48.png",
      "128": "images/Anqa_128.png"
    },
    "default_title": "Anqa Detector",
    "default_popup": "popup.html"
  },
  "permissions": [
    "tabs",
    "webNavigation",
    "storage"
  ],
  "host_permissions": [
    "https://nbdetector.anqa-itsecurity.de/*"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "plag@anqa-itsecurity.de"
    }
  },
  "background": {
    "scripts": [
      "background.js"
    ]
  },
  "web_accessible_resources": [
    {
      "resources": [
        "assets/alert.mp3"
      ],
      "matches": [
        "<all_urls>"
      ]
    }
  ]
}