This is a hard one - I don't know my bank well but I have left money with them. Because I believe (perhaps naively) that a combination of regulation (say ASIC), plus domicile (say AU), plus reputation (not too many 'scam' reports here) should serve to inform me of my choice. But I am truly being given a proper education in these forums!--> Why did you send money to people you did not know well?