Yahoo Password Frequency Corpus

This dataset includes sanitized password frequency lists collected from Yahoo in

May 2011. 

For details of the original collection experiment, please see:

Bonneau, Joseph. "The science of guessing: analyzing an anonymized corpus of 70 

million passwords." IEEE Symposium on Security & Privacy, 2012.

http://www.jbonneau.com/doc/B12-IEEESP-analyzing_70M_anonymized_passwords.pdf

This data has been modified to preserve differential privacy. For details of

this modification, please see:

Jeremiah Blocki, Anupam Datta and Joseph Bonneau. "Differentially Private 

Password Frequency Lists." Network & Distributed Systems Symposium (NDSS), 2016.

http://www.jbonneau.com/doc/BDB16-NDSS-pw_list_differential_privacy.pdf

Each of the 51 .txt files represents one subset of all users' passwords observed

during the experiment period. "yahoo-all.txt" includes all users; every other

file represents a strict subset of that group.

Each file is a series of lines of the format:

FREQUENCY #OBSERVATIONS

...

with FREQUENCY in descending order. For example, the file:

3 1

2 1

1 3

would represent a the frequency list (3, 2, 1, 1, 1), that is, one password

observed 3 times, one observed twice, and three separate passwords observed

once each.