Yahoo Voices

In 2012, Yahoo experienced a major data breach when the information of over 453,000 users was leaked on the internet. The leaked data included email addresses, passwords, and security questions and answers. The breach was discovered by security researcher

Marc Maiffret, who found a database containing the stolen user information
on a publicly accessible server. The leak was significant as it exposed the
personal information of a large number of Yahoo users, putting them at risk
of identity theft and other security threats.