Equifax Breach - Strange twist in the story. The stolen data has NEVER been FOUND and the investigators have two interesting theories.

First, the foreign government is probably combining this information with other stolen data, then analyzing it using artificial intelligence or machine learning to figure out who's likely to be — or to become — a spy for the U.S. government. 

Second, credit reporting data provides compromising information that can be used to turn valuable people into agents of a foreign government.

https://www.cnbc.com/2019/02/13/equifax-mystery-where-is-the-data.html