The company said the attack on its computer systems resulted in unauthorized access to customer data including names, email addresses, "encrypted" passwords and some users' dates of birth, according to an internal memo emailed to employees and obtained by AllThingsD.
The memo said neither customer credit card information nor merchant banking information was compromised.
In the email to customers, LivingSocial is recommending that affected users create new passwords.
"We recently experienced a cyber attack on our computer systems that resulted in unauthorized access to some customer data from our servers," LivingSocial Chief Executive Tim O'Shaughnessy said in the email. "We are actively working with law enforcement to investigate this issue."
LivingSocial is the nation's second-largest daily deals company, behind