Add this to LivingSocial's growing list of woes: The money-losing daily deals site admitted Friday that it has been the victim of a cyber attack.

A LivingSocial spokesperson said the company has begun reaching out to the more than 50 million customers whose data may have been compromised. Leaked data includes names, e-mail addresses, dates of birth and encrypted passwords. Customers' credit card information and merchants' financial and banking information were not affected by the hack, LivingSocial said.

Here's the internal memo LivingSocial CEO Tim O'Shaughnessy sent to employees:

And here's the e-mail on its way to customers:

LivingSocial lost $650 million last year, even as its revenue more than doubled to $536 million. Strapped for cash, the company raised another $110 million in financing from investors in February of this year.

Image courtesy of LivingSocial