IDAX is one of top exchanges, but at least it is not a too old exchange. So we should be cautious and careful about IDAX. Using IDAX with risks. However, by now, I don't think IDAX is a scam one, at least at the moment. In crypto, things change fastly, and good exchanges, good projects might turn into scam within minutes or days, if their teams want to do scam exits. What happened with Bit Blender, that took opportunity from Best Mixer in order to do scam exit.