. You can crack more than 10 percent of random PINs by dialing in 1234. Expanding a bit, 1234, 0000, and 1111, make up about 20 percent. 26.83 percent of passwords can be cracked using the top 20 combinations. That would be 0.2 percent of the passwords if they were randomly distributed. For the data set used, 8068 is the 'safest' password, used just 25 times out of 3.4 million. Birthday years are big.

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The 1900 PINS-1986, 1960, 1991, and so on-are extremely popular, with PINs from later in the century used the most. A full 17.8 percent of PINs are couplets, such as 7878, 8181. 2580 seems random, but comes it at No.

Serial kontakt factory library. 22 most-used on the list. Because it's straight down the middle row on a telephone keypad.