dont trust this, looks like a scam, especially the usb thing, also copy paste of mcafeedex on which we are already listed
Its not a scam, its a portal, even look at Mcafee tweets
https://twitter.com/officialmcafee/status/1183100143517798400also there GITHUB
https://github.com/Mshuu/mcafeedex/tree/logicdexWe are part of the official portal system!! DYOR
Its called decentralization, if one goes down or is taken down, there are others, so you always have access and dont lose your funds like centralized exchanges!! You are in control of your MONEY!!