四位數密碼的分佈

分析信用卡四位數密碼的分佈:「PIN number analysis」。

透過已經外洩的資料分析:

Obviously, I don’t have access to a credit card PIN number database. Instead I’m going to use a proxy. I’m going to use data condensed from released/exposed/discovered password tables and security breaches.

19xx 那邊特別高,拉出來看可以看到分佈:(很像是出生年 XDDD)

相同的 abab (前兩碼與後兩碼相同) 也可以看出特別高,而 aaaa (四碼都一樣) 的特別亮:

當不只四碼時,也有一些數據:

另外是特別高的 1004 的原因:

Many people also asked the significance of 1004 in the four character PIN table. This comes from Korean speakers. When spoken, "1004" is cheonsa (cheon = 1000, sa=4).

"Cheonsa" also happens to be the Korean word for Angel.

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