Twitter admits it may have used user data for ads without permission

Twitter Inc said on Tuesday that it may have used data for personalized ads without a user’s permission due to issues with the microblogging website’s settings.

The company said it recently discovered those issues and fixed them on Monday, although it hasn’t yet determined who may have been impacted.

Consumer data is a powerful tool that companies use to decide where to place advertisements, what content to feature, and which consumers might be interested in the product.

Big technology companies have been under scrutiny from regulators around the world over their data sharing practices.