Amazon.com-owned Zappos’ network breach exposed information relating to as many as 24 million of its customers. The company issued a clear, timely notification to its customers, warning them to change their passwords. The site remained offline for non-U.S. users outside of the United States, as of Tuesday, the site for changing passwords remained inaccessible. The breach has yet to answer many questions–and may not yet know how long attackers had access to its systems before the breach occurred.”]
Source: https://www.darkreading.com/attacks-breaches/zappos-breach-8-lessons-learned