How did the scammers do it?

Pam Herr, Sun Valley

I read the story about SA Post office warning about 419 scams. Can the post office advise us which bank is being used? How did the crooks get these fraudulent accounts opened when all banks are carrying out FICA on everybody and every-thing? Surely that is how the crooks could be unearthed. It seems then that some bank is not doing its job properly.