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In February 2018 a massive collection of nearly 3000 distinct data breaches was compiled and exposed online. This incident represents a significant aggregation event where numerous smaller leaks were merged into a single searchable repository. The primary content of this collection consisted of plain text email addresses paired with passwords allowing for credential stuffing attacks. This data set was widely circulated across various hacking forums and deep web marketplaces during the period making it one of the largest historical password collections at the time.