A cybersecurity study by 'Information is Beautiful' examined 3.4 million PIN numbers from data breaches. According to the study, the least common 4-digit PIN numbers are 8557, 9047, 8438, 0439, 9539, 8196, 7063, 6093, 6827, 7394, 0859, 9480, 6793, 8398, 0738, 7637, 6835, 9629, 8093 and 8068. On the other hand, 1234 and 0000 are among most common PIN numbers.