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WorldCist'20 - 8th World Conference on Information Systems and Technologies

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Common Passwords and Common Words in Passwords

A strong password must be a long sequence of characters. Ideally, each character in a strong password should be randomly selected from a large character set. In practice, people prefer to create passwords that are easy to remember. In this work, we analyzed over 600 million leaked passwords from different websites. We find most passwords are weak due to the fact either the passwords are used by different accounts (users) or these passwords use a small set of words. This dictionary size can be as small as 90,000. We also found about 95% of leaked passwords of yahoo.com include some substring(s) that match about six millions passwords from the rockyou.com leak.

Jikai Li
The College of New Jersey
United States

Ethan Zeigler
The College of New Jersey
United States

Thomas Holland
The College of New Jersey
United States

Dimitris Papamichail
The College of New Jersey
United States

David Greco
The Collge of New Jersey
United States

Joshua Grabenstein
The College of New Jersey
United States

Daan Liang
University of Alabama
United States

 


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