Anti-fraud Integration via Verification Page
See the example of the verification page :
Download and unzip, and put it in your website's root directory
Put verification page's file "kb.html" in your website's root directory
To check the website traffic, put this JS code in your website's footer

<script type="text/javascript">
VerificationPageKey = "12345678";
if (document.cookie.indexOf("cKillBot") == -1) {
    document.cookie = "cKillBot=1; path=/";
    setTimeout( function() {window.location.href = "/kb.html?hash_str="+VerificationPageKey+"&r="+Math.random()}, 1500);
Or use public API key: VerificationPageKey = "12345678";
Contact us to get your own verification key

<script type="text/javascript">
VerificationPageKey = "12345678"
  1. Create a Yandex.Metrica account here:
  2. Add a Yandex.Metrica tag in the top part of the file "kb.html"
Yandex Metrica integration
In Yandex.Metrica reports (Session Parameters => fraud).
WebVisor report Example:
See the results of the fraud check