Since crypto is anonymous (well not exactly but or yes) there is load of scam and fake website looking exactly the same as proper ones.
But there is also a cool chrome addon called Cryptonite. it checks popular crypto websites and tells if they are real or not about its.
In this cryptonite by Metacert from chrome:
https://chrome.google.com/webstore/detail/cryptonite-by-metacert/keghdcpemohlojlglbiegihkljkgnige?hl=en