BitMEX is happy to announce that Two-Factor Auth via Google Authenticator (Android, iOS) is now available. Additionally, if you are using Authy, you may also use Two-Factor auth by scanning the QR code.
You can enable Two-Factor Auth in your Account Settings.
We will soon be enabling other TFA methods such as Yubikey.
Please email us at support@bitmex.com if you have any trouble.