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Helzberg

coinbasecartel

This 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 GAP

Window 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.

141days open
t1 · Published t2 · Pending
Apr 12, 2026Not disclosed yet
Country
United States
Business Category
Retail / E-commerce
Employees
+1000
Discovered
2026-04-12
Published
April 12, 2026
Disclosed / Notified
Not disclosed yet
Victim ID
eheeJQzGnP4L

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

SAMPLE

Proof-of-breach screenshots the operator posted from the stolen data. Previews are redacted and locked — the originals are available on HaveIBeenRansom.

file_tree.png
finance_2024.xlsx
passport_scan.jpg
contract_signed.pdf
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Dark Web Exposure

Findings for helzberg.com — indexed by HaveIBeenRansom.
230
found in Infostealer logs
2,780+
found in Traditional breaches
220+
found in Ransomware leaks
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@BreachedData1 LinkedIn 2021-23 Cleaned.7z.001
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••• emails
Factual_BF.7z
B F R e p o V 3 F i l e s · breach
••• emails
clop · ransomware
••• emails
Database World ROC · breach
••• emails
shinyhunters · breach
••• emails
+ 17 more leak sources locked
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Visit Website Original Post View Group: coinbasecartel

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