2013 — Living Social: As many as 50 million LivingSocial members may have…
Data compromised
Personal information
Technical writeup
As many as 50 million LivingSocial members may have had their names, email addresses, dates of birth, and encrypted passwords exposed by a cyber attack. Customer credit card information was not compromised. Customers were encouraged to change their passwords on any other sites on which they used the same or similar passwords.UPDATE (05/03/2013): As many as 50 million acounts may have been affected. It is estimated that 29 million people used LivingSocial and many had multiple accounts.
Root cause
Hacking