One of Anti-Cheating solution by FuseClick. You can customize for Advertiser or Offer to ensure if a Security Token is required when a conversion is fired.

1. go to Setup->Advertiser Panel Settings->Advertiser Security Token and open it;

2.Go to Setup->Open Global Security Token->Open Global Security Token and open it, Global Security Token and Generate Token,

4.Go Manage Advertisers->Tracking->Security Token and open it.

5.Copy the global Postback and set int the advertiser's platform. The Postback URL like the below:{TID}&adv_sectkn={TOKEN}