You know CMC is quite a big reference for that. But as many big site they can manipulate the price and all that stuff related. You have always to care about your privacy because in this era it's what matters most:choose anonymus browser as long as VPN and you can be safe again. Tracking ads are there ko follow you as well as hackers are.
If you are getting trumble with all that coin, choose a Tor-based one for your safety.