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Reverse authentication for banking

http://blog.jgc.org/2012/05/reverse-authentication-for-banking.html

by jgrahamc • 14 years ago

6 3 14 years ago

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3

pavel_lishin2• 14 years ago

I wonder if any scammers would spend the resources banking on the 1/1000 chance of guessing the three numbers correctly.

If you call a thousand people, odds are that you'll be able to convince one of them you're from the bank. At that point, what are the odds of engineering them into giving you money?

rollypolly• 14 years ago

If the number of digits is the only thing insecure about this system, it sounds pretty easy to harden by adding a few extra digits (or letters).

pavel_lishin2• 14 years ago

Sure, but that means manufacturing new dongles and mailing them out to everyone. It would be a significant up-front cost.

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