https://www.cnet.com/news/facebook-limits-how-advertisers-can-target-you/

Facebook has been examining how it could better protect people's data. Now it's limiting some of its practices around advertising data.

The social network on Wednesday said it's ending something called "Partner Categories," which lets advertisers use information from third-party data providers including Experian and Oracle Data Cloud. Facebook partnered with those companies to help advertisers -- in particular, advertisers like small businesses that may not have much customer data of their own -- to help them reach specific types of customers on Facebook.