In November 2015, the US internet and cable TV provider Comcast suffered a data breach that exposed 590k customer email addresses and plain text passwords. A further 27k accounts appeared with home addresses with the entire data set being sold on underground forums.
Accounts breached: 616882
Breached on: November 08, 2015
Exposed data: Email addresses, Passwords, and Physical addresses
Added on: February 08, 2016