Zappos.com hacked, 24 million users affected

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by Dancho Danchev

According to an internal memo issued by Zappos, the shoe-and-apparel-selling division of Amazon has been breached by unknown cyber attackers, leading to the compromised accounts of over 24 million users.

The company has indicated that names, email addresses, mailing addresses, and the last four digits of customer’s credit card numbers have been compromised.

More info on the attack, including a copy of the internal memo:

Dear Zappos Employees -

Please set aside 20 minutes to carefully read this entire email.

We were recently the victim of a cyber attack 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.

Because of the nature of the investigation, the information in this email is being sent a bit more formally, and unfortunately we are not able to provide any more details about specifics of the attack beyond what is in this email and the link at the end of this email, but we can say that THE DATABASE THAT STORES OUR CUSTOMERS’ CRITICAL CREDIT CARD AND OTHER PAYMENT DATA WAS NOT AFFECTED OR ACCESSED.

The most important focus for us right now is the safety and security of our customers’ information. Within the next hour, we will begin the process of notifying the 24+ million customer accounts in our database about the incident and help step them through the process of choosing a new password for their accounts. (We’ve already reset and expired their existing passwords.)

Here is the email that our customers will be receiving:

————————————————————————-

Subject: Information on the Zappos.com site – please create a new password

First, the bad news:

We are writing to let you know that there may have been illegal and unauthorized access to some of your customer accountinformation on Zappos.com, including one or more of the following: your name, e-mail address, billing and shipping addresses, phone number, the last four digits of your credit card number (the standard information you find on receipts), and/or your cryptographically scrambled password (but not your actual password).

THE BETTER NEWS:

The database that stores your critical credit card and other payment data was NOT affected or accessed.

SECURITY PRECAUTIONS:

For your protection and to prevent unauthorized access, we have expired and reset your password so you can create a new password. Please follow the instructions below to create a new password.

We also recommend that you change your password on any other web site where you use the same or a similar password. As always, please remember that Zappos.com will never ask you for personal or account information in an e-mail. Please exercise caution if you receive any emails or phone calls that ask for personal information or direct you to a web site where you are asked to provide personal information.

PLEASE CREATE A NEW PASSWORD:

We have expired and reset your password so you can create a new password.

Please create a new password by visiting Zappos.com and clicking on the “Create a New Password” link in the upper right corner of the web site and follow the steps from there.

We sincerely apologize for any inconvenience this may cause. If you have any additional questions about this process, please email us at passwordchange@zappos.com

————————————————————————-

We have also created a web page that we will continue to update as we learn more about what questions customers have:

http://www.zappos.com/passwordchange

In order to service as many customer inquiries as possible, we will be asking all employees at our headquarters, regardless of department, to help with assisting customers.  Due to the volume of inquiries we are expecting, we realized that we could serve the most customers by answering their questions by email. We have made the hard decision to temporarily turn off our phones and direct customers to contact us by email because our phone systems simply aren’t capable of handling so much volume. (If 5% of our customers call, that would be over 1 million phone calls, most of which would not even make it into our phone system in the first place.)

We’ve spent over 12 years building our reputation, brand, and trust with our customers. It’s painful to see us take so many steps back due to a single incident. I suppose the one saving grace is that the database that stores our customers’ critical credit card and other payment data was not affected or accessed.

Over the next day or so, we will be training everyone on the specifics of how to best help our customers through their password change process now that their passwords have been reset and expired. We need all hands on deck to help get through this.

Thanks everyone.

-Tony Hsieh
CEO – Zappos.com

The good news? According to Zappos, the database that stores critical credit card and other payment data was NOT affected or accessed.

Zappos.com users are advised to be extra cautions for a potential upcoming wave of spear phishing emails targeting their email accounts, now that malicious attackers have obtained names, mailing addresses and email accounts. Malicious attackers often take advantage of such data breaches, and later on launch event-based social engineering attacks using the stolen data.

You can find more about Dancho Danchev at his LinkedIn Profile. You can also follow him on  Twitter.


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About the Author

Name: Dancho Danchev
Role: Contributing Threat Researcher

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Dancho Danchev is an internationally recognized security blogger, cybercrime researcher, and a public speaker.  He’s been an active security blogger since 2006, maintaining a popular security blog, where he shares detailed analyses of tactics, techniques, and procedures (TTP) of malicious and fraudulent adversaries.

You can find out more about Dancho’s expertise and experience at his LinkedIn Profile, or at Wikipedia.

You can also follow him on  TwitterGoogle+ or Facebook.


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