Online developer bootcamp company Thinkful is sending out email notifications that state an unauthorized user was able to gain access to employee accounts credentials. Due to this, they are requiring all users to reset their passwords the next time they login. There is no evidence that any user data was accessed at all and that they wil continue to investigate. No financial information or government ID numbers were accessed from the hacked accounts. If you receive these emails it is suggested that you change any passwords on other accounts that utilize the same login credentials.
Source: https://www.bleepingcomputer.com/news/security/thinkful-resets-all-user-passwords-after-security-breach/