Yahoo hack: What to do if you’re affected

Yahoo disclosed a new security breach Wednesday that may have affected more than one billion accounts.

The breach dates back to 2013 and is thought to be separate from a massive cyber security incident announced in September.

The stolen data may have included names, email addresses and passwords, but not financial information. The company will notify users who may be affected and has begun requiring users to change their passwords. The security incident, likely one of the largest cyber security breaches ever, comes less than three months after Yahoo admitted data from at least 500 million accounts had been stolen.