https://techcrunch.com/2021/04/06/answers-being-sought-from-facebook-over-latest-data-breach/

Facebook’s lead data protection regulator in the European Union is seeking answers from the tech giant over a major data breach reported on over the weekend.

The breach was reported on by Business Insider on Saturday which said personal data (including email addresses and mobile phone numbers) of more than 500M Facebook accounts had been posted to a low level hacking forum — making the personal information on hundreds of millions of Facebook users’ accounts freely available.