An Alternative Method for Understanding User-Chosen Passwords

Table 1

Basic information about our 5 password datasets.

Dataset	Web service	When leaked	Total PWs
MySpace	Social networking	Oct. 2006	49,623
PhpBB	Programmer forum	Jan. 2009	255,373
Rootkit	Hacker forum	Feb. 2011	69,324
Yahoo	Web portal	July. 2012	442,834
12306	Train ticketing	Dec. 2014	129,303