https://techcrunch.com/2018/09/26/chegg-resets-40-million-user-passwords-after-data-breach/

Chegg, a technology giant specializing in textbook rental, has confirmed a data breach affecting some 40 million customers.

In a filing with the Securities and Exchange Commission, the company said it will reset all user passwords after hackers gained access to the company’s customer database. That database includes users for Chegg’s website but also other products, such as citation service EasyBib, which it owns.