East
thegentlemenThis record tracks a ransomware attack claimed by the thegentlemen group against East. It collects the publicly disclosed attack details — sector, location and timeline — as published on the operator's leak site and indexed by Breach House.
Window Zero
EXPOSURE GAPWindow Zero is the time the breach stayed in the open before anyone said so — the gap between when the attack was first discovered on the operator's leak site (t1) and when it was publicly disclosed (t2). The wider this window, the longer victims, staff and customers were exposed with no warning.
Attack Summary
east-inc.jp zoominfo.com/c/east/5000054099 East Inc. is a Japanese company headquartered in Tokyo that provides comprehensive outsourcing services for commercial facilities — shopping malls, outlet parks, and office complexes — covering everything from day-to-day operations to system development, website management, and information services. The company has an impressive track record of over 800 commercial facilities nationwide across Japan, with clients including Roppongi Hills, Nihonbashi Takashimaya S.C., Mitsui Outlet Parks, and Ebisu Garden Place. Since 2007, East Inc. has also been supporting Japanese companies expanding into China, offering systems and operational know-how for overseas operations
Leak Screenshots
SAMPLEProof-of-breach screenshots the operator posted from the stolen data. Previews are redacted and locked — the originals are available on HaveIBeenRansom.