This dataset includes sanitized password frequency lists collected from Yahoo inMay 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.pdfThis data has been modified to preserve differential privacy. For details ofthis 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.pdfEach of the 51 .txt files represents one subset of all users' passwords observedduring the experiment period. "yahoo-all.txt" includes all users; every otherfile 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 12 11 3would represent a the frequency list (3, 2, 1, 1, 1), that is, one passwordobserved 3 times, one observed twice, and three separate passwords observedonce each.

Context

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.

Content

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.