Facebook Marketplace
What caused it
The dataset was allegedly taken from systems used by a Meta contractor. Public reporting does not establish the precise intrusion method, and HIBP notes that the bcrypt hashes may not correspond to the listed Facebook accounts.
What followed
About 200,000 Marketplace records were posted to a hacking forum in 2024. HIBP indexed 77,267 unique email addresses from that larger file. The data included bcrypt hashes, but reporting found no indication that the hashes belonged to the corresponding Facebook accounts. No enforcement action or class settlement specific to this dataset was identified in this review.
Evidence: HIBP / reporting · HIBP breach catalog