If you have a Yahoo account, you could be the victim of one of the largest cyber security breaches ever. Yahoo says data has been stolen from more than 1 billion accounts.
The breach dates back to 2013 and is believed to be separate from a massive cybersecurity incident announced in September.
Yahoo believes an unauthorized third party stole user data from more than 1 billion accounts in August 2013. That data may have included names, email addresses, and passwords but not financial information.
The company says it will notify users who may be affected and has begun requiring users to change their passwords.