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Window Name Eraser

Preventing data leakage through window.name

  1. // ==UserScript==
  2. // @name         Window Name Eraser
  3. // @namespace    https://tampermonkey.net/
  4. // @version      1.4
  5. // @description  Preventing data leakage through window.name
  6. // @author       Streampunk
  7. // @icon         data:image/png;base64,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
  8. // @match        http://*/*
  9. // @match        https://*/*
  10. // @exclude      https://www.google.com/recaptcha/api2/*
  11. // @exclude      https://google.com/recaptcha/api2/*
  12. // @exclude      https://www.google.com/recaptcha/enterprise/*
  13. // @exclude      https://google.com/recaptcha/enterprise/*
  14. // @exclude      https://www.recaptcha.net/recaptcha/api2/*
  15. // @exclude      https://recaptcha.net/recaptcha/api2/*
  16. // @exclude      https://www.recaptcha.net/recaptcha/enterprise/*
  17. // @exclude      https://recaptcha.net/recaptcha/enterprise/*
  18. // @exclude      https://mail.proton.me/*
  19. // @exclude      https://swisscows.email/*
  20. // @exclude      https://webmail.vivaldi.net/*
  21. // @grant        none
  22. // @license MIT
  23. // ==/UserScript==
  24.  
  25. 'use strict';
  26.  
  27. //Prevent the website from starting
  28.  var a = window.onload;
  29.  window.onload = "";
  30.  
  31. //Remove property
  32.  var old = window.name;
  33.  window.name = "";
  34.  
  35. if (old != "" ) {
  36.  console.log("Evaluating results");
  37.  Firefox.extension.sendMessage({url: document.domain, caption: old}, function(response)
  38.  {
  39.  switch (response.radio) {
  40.  case "fallback":
  41.  //White listed: bring back the property
  42.  window.name = old;
  43.  console.log("Window Name Eraser: Whitelisted domain");
  44.  break;
  45.  default:
  46.  console.log("Window Name Eraser: Blocked domain");
  47.  break;
  48.  }
  49.  //Let the website start
  50.  var getType = {};
  51.  if (a && getType.toString.call(a) == '[object Function]') {
  52.  window.onload = function () { a(); }
  53.  }
  54.  });
  55.  }
  56.  else {
  57.  //Let the website start
  58.  var getType = {};
  59.  if (a && getType.toString.call(a) == '[object Function]') {
  60.  window.onload = function () { a(); }
  61.  }
  62.  console.log("Window Name Eraser: Nothing to block here");
  63.  }