M. B. Kahn Construction Co.
coinbasecartelThis record tracks a ransomware attack claimed by the coinbasecartel group against M. B. Kahn Construction Co.. 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
[AI generated] M. B. Kahn Construction Co. is a general contracting and construction management firm based in the United States, headquartered in Columbia, South Carolina. Founded in 1926, the company operates primarily across the southeastern United States. It serves sectors including commercial, industrial, healthcare, education, and government markets, delivering services such as design-build, preconstruction planning, and facility construction.
Leak Screenshots
SAMPLEProof-of-breach screenshots the operator posted from the stolen data. Previews are redacted and locked — the originals are available on HaveIBeenRansom.