Zappos.com, the popular online shoe retailer, announced Sunday night that hackers broke into its network, stealing information for up to 24 million customers. 

Zappos CEO Tony Hsieh made sure to stress that customer's credit card information was not compromised, in an email sent to customers. The email outlined that the hackers did, however, take shipping, billing, and email addresses, phone numbers, and the last four digits of customers credit cards. In a statement posted onto the company's blog, Zappos explained the incident

"We were recently the victim of a cyberattack by a criminal who gained access to parts of our internal network and systems through one of our servers in Kentucky. We are cooperating with law enforcement to undergo an exhaustive investigation."

The company reset all existing account passwords to prevent the hackers from taken advantage of any of the gleaned information. 

Zappos was founded in 1999 by Nick Swinmurn, and has built its brand upon a reputation for great customer service. Amazon acquired the company in 2009. 

UPDATE: 

Zappos's discount affiliate website, 6PM.com also suffered an attack by hackers. Similar to Zappos, 6PM saw its customer information—billing, shipping, and email addresses, the last four digits of credit card numbers, and phone numbers—compromised. The site contacted all users and reset customer passwords. 

[via Fox News]