How secure are four and six-digit mobile phone PINs?

ronjor · Mar 11, 2020

by Ruhr-Universitaet-Bochum March 11, 2020

A German-American team of IT security researchers has investigated how users choose the PIN for their mobile phones and how they can be convinced to use a more secure number combination. They found that six-digit PINs actually provide little more security than four-digit ones. They also showed that the blacklist used by Apple to prevent particularly frequent PINs could be optimised and that it would make even greater sense to implement one on Android devices.
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How secure are four and six-digit mobile phone PINs?

ronjor Global Moderator

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How secure are four and six-digit mobile phone PINs?

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