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This delightful chart takes 3.4 million 4-digit PINs recovered from and disclosed in multiple data breaches
This delightful chart takes 3.4 million 4-digit PINs recovered from, and disclosed in, multiple data breaches.A 4-digit PIN can have any value between 0000 and 9999. So there are ten thousand possible Pins… and this wonderful chart contains 10,000 little squares arranged in a flat two-dimensional map having 100 rows and 100 columns. One way to think of this is that the first two digits of the Pin (00 through 99) specify one axis and the last pair of digits specify the other axis. So, every single possible PIN has its own square on this chart. And within this 3.4 million PIN dataset, the relative number of times every single possible PIN appears, sets the brightness of its square on the chart. So what do we learn from this?
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