A third-party customer service provider used by Discord was hacked, exposing sensitive information of a limited number of users. The unauthorized party accessed names, usernames, emails, credit card numbers, and government ID photos from users who appealed age determinations. However, full credit card numbers and passwords were not affected. Discord is notifying impacted users via email and has taken steps to revoke access, notify authorities, and enhance its security controls.
Source: https://www.theverge.com/news/792032/discord-customer-service-data-breach-hack