Examine source code of Data Breach Info

{
  "name": "Data Breach Info",
  "version": "1.1",
  "manifest_version": 2,
  "description": "Be secure and protected. Get information about all data breaches",
  "homepage_url": "http://thegoldenstep.com",
  "icons": {
    "16": "icons/16_logo.png",
    "48": "icons/48_logo.png",
    "128": "icons/128_logo.png"
  },
  "browser_action": {
    "default_title": "Data Breach Info",
    "default_popup": "html/dataBreachInfo.html"
  },
  "background": {
    "scripts": [
      "js/background.js"
    ],
    "persistent": true
  },
  "content_security_policy": "script-src 'self'; connect-src https://haveibeenpwned.com/api/; object-src 'self';"
}