It's a very short article, here are the salient bits:
===
A massive data breach at Yahoo in 2013 was far more extensive than previously disclosed, affecting all of its 3 billion user accounts...
...
...Oath ... said the company determined last week that the break-in was much worse than thought, after it received new information from outside the company. ... declined to elaborate on the source of that information. Compromised customer information included usernames, passwords, and in some cases telephone numbers and dates of birth...
...
The number of individuals affected by the 2013 attack is smaller than 3 billion, because some people​ have multiple accounts​ ... Oath will immediately begin notifying the users who own the additional roughly 2 billion accounts. That is expected to take several days and occur via email...
===
A massive data breach at Yahoo in 2013 was far more extensive than previously disclosed, affecting all of its 3 billion user accounts...
...
...Oath ... said the company determined last week that the break-in was much worse than thought, after it received new information from outside the company. ... declined to elaborate on the source of that information. Compromised customer information included usernames, passwords, and in some cases telephone numbers and dates of birth...
...
The number of individuals affected by the 2013 attack is smaller than 3 billion, because some people​ have multiple accounts​ ... Oath will immediately begin notifying the users who own the additional roughly 2 billion accounts. That is expected to take several days and occur via email...
===
Emphasis mine re: details of disclosed info.