One way to counter this is to insist the trader provides you with his
personal MT4 OANDA account, the one in his name not one out of his
hundred off-shore fronting companies.
Oanda allows off-shore companies to open accounts. For example US
residents can use their off-shore bank accounts to trade UK
instruments by using the residential details of somebody in the UK or
anywhere else in the world, thus side-stepping the 2010 Dodd-Franks
legislation.