2026 Japan — criminal-forum marketed bundle touching SUUMO, CHINTAI, At Home, HOME'S, Ouchino, Chintai EX
Data compromised
Marketing rows described names, contacts, demographics, housing preferences, property browsing or inquiry metadata—the exact field mix varies by analytic write-up
Technical writeup
Reporting in April 2026 summarized a Japanese-language criminal-forum listing of a multi-portal subscriber-style dataset marketed at roughly 2.4 million lines (~2.78 GB in some descriptions) referencing major consumer property portals including SUUMO, CHINTAI, At Home, HOME'S (Homes.jp), Ouchino, and Chintai EX, with Gigazine noting fields such as names, demographics, contacts, preferences, income bands, property attributes, and visit metadata. Sources stressed ambiguity whether data reflected one operator compromise versus aggregation across brands; unrelated prior SUUMO employee incidents were distinct timelines.
Root cause
Marketplace-listed dataset; intrusion path and single-vs-multi-victim provenance disputed in coverage