Microsoft had a database of 10 million faces without user knowledge

This database known as MS Celeb contained 10 million images of 100,000 people and was created by content stored online. The high volume of images and data structure made this data set very useful in training programs that recognize people's faces in different photos.

Deleting this database came after a Financial Times investigation that revealed that many people's faces were on this database without knowledge or permission to use their photos.

Under the new GDPR Microsoft regulation, it also risks being put into investigation for use of user data without their information.

Microsoft also did not speak of deleting the database, but downplayed its importance. The company had said about FT that it was only for educational purposes and that it was used by an employee who is no longer in Microsoft and as a result has been erased.

With FT reporting, even the Universitys Duke and Stanford deleted their databases with photos of different people.