Helzberg
coinbasecartelThis record tracks a ransomware attack claimed by the coinbasecartel group against Helzberg. 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] Helzberg Diamonds is a American retail jewelry company headquartered in North Kansas City, Missouri. Founded in 1915, it operates a chain of jewelry stores across the United States, selling diamonds, engagement rings, wedding bands, and fine jewelry. The company is a subsidiary of Berkshire Hathaway, having been acquired in 1995. Helzberg operates hundreds of retail locations in shopping malls and centers nationwide.
Leak Screenshots
SAMPLEProof-of-breach screenshots the operator posted from the stolen data. Previews are redacted and locked — the originals are available on HaveIBeenRansom.