https://www.cnet.com/news/most-facebook-users-hit-by-cambridge-analytica-scandal-are-californians/

Facebook CEO Mark Zuckerberg has repeatedly said that up to 87 million people had their data improperly shared with Cambridge Analytica, a digital consultancy with ties to the Trump campaign.

Now, we know where most people were affected. Facebook last month quietly released a state-by-state breakdown of those caught up in the scandal.