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Cracking PIN numbers PIN numbers are vulnerable to the same weaknesses as other passwords; people can choose them. Many applications and phones rely on PIN numbers for locking access to devices. If a PIN is good enough to protect your bank card, then it's probably safe enough to protect your phone right? But phones tend to be much more lenient than banks when it comes to getting your PIN wrong. Fruit based devices and Android devices all let you try 10 PIN codes before wiping the device. How much extra leverage does that give an attacker? What if they have access to multiple devices and bank cards? Most common three PIN numbers Data from a recent (2014) breach gives us some answers. The most common PIN number in this set is 0000(5.25%) closely followed by 1234 (4.15%) and 1111(2.89%). These three PIN numbers make up over 12% of the data. If you only had three tries (read bank card at an ATM) these are the numbers to try. A recent report by McAffee values your credit card a