While the full leak contained data for hundreds of millions of users, it was often broken down into smaller subsets (such as 500,000-user segments) for easier distribution on various forums and security research platforms. Key Context of the Data
: The data was originally scraped by exploiters who took advantage of a vulnerability in Facebook's "Contact Importer" tool, which was fixed in 2019. fb-500k.csv.zip
Are you looking to purposes, or are you checking for personal security ? While the full leak contained data for hundreds