I wouldn't really have to comment negative here but I just want you to know about the  Accusations to BaseFEX which is about them Plagiarized text from bitmex site and with the Anonymous Team posted in this thread https://bitcointalk.org/index.php?topic=5127951.0

There is also a scam accusation which a user lost 3BTC which he said in this post https://bitcointalk.org/index.php?topic=5127951.msg51681576#msg51681576