The Egregor ransomware gang is claiming responsibility for the cyberattack on U.S. bookstore giant Barnes & Noble on October 10th, 2020. The attackers state that they stole unencrypted files as part of the attack. After discovering the attack, Barnes and Noble shut down their network to prevent the attack’s spread, which led to a service outage. Email addresses, billing addresses, shipping addresses, and purchase history were exposed on the hacked systems. No credit card details are stored on the systems and therefore the speculation that financial loss from fraudulent activity could result is inaccurate.
Source: https://www.bleepingcomputer.com/news/security/barnes-and-noble-hit-by-egregor-ransomware-strange-data-leaked/