The specific file fb-500k.csv.zip likely refers to a portion of the , which exposed the personal information of approximately 533 million users across 106 countries.
: In past major breaches, such as the Cambridge Analytica incident, Facebook has sent direct notifications to the news feeds of affected users. fb-500k.csv.zip
If you are looking for this file to see if your own data was compromised, it is safer to use reputable breach verification services rather than downloading compressed files from unknown sources. The specific file fb-500k