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Mathew J. Schwartz, InformationWeek
Mathew J. Schwartz, InformationWeek
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Bank Customers Favor Birthdate PINs

Too many people use a date for their bank card PIN, giving attackers an edge in figuring out the number, reports Cambridge University researchers.

Why don't banks block overused or insecure passwords and PIN codes?

That's one question posed by a study conducted by Cambridge University security researchers Joseph Bonneau, Soren Preibusch, and Ross Anderson, who've conducted what they said is "the first-ever quantitative analysis of the difficulty of guessing four-digit banking PINs." Their research has implications not just for ATM cards, but also for any mobile device set to require a numeric password.

The big warning from their research is that based on current PIN-picking patterns, would-be attackers have a 9% chance of correctly guessing a person's ATM code.



Read the rest of this article on InformationWeek

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