A ransomware claim alleges that Helzberg Diamonds, a US-based jewelry retailer, was targeted by the threat actor coinbasecartel. The claim describes disruptions to Helzbergβs operations across the United States as a result of the attack.
#UnitedStates
#UnitedStates
Incident Details
- Victim: Helzberg
- Sector: Consumer Services
- Country: US
- Actor: coinbasecartel
- Source: http://fjg4zi4opkxkvdz7mvwp7h6goe4tcby3hhkrz43pht4j3vakhy75znyd.onion/companies/helzberg
- Discovered: 2026-04-12 22:24:59.483852
- Published: 2026-04-12 22:24:43.939193
Information
- Helzberg Diamonds is an American retail jewelry company headquartered in North Kansas City, Missouri.
- Founded in 1915.
- Operates a chain of jewelry stores across the United States.
- Sells diamonds, engagement rings, wedding bands, and fine jewelry.
- Subsidiary of Berkshire Hathaway since 1995.
- Operates hundreds of retail locations in shopping malls and centers nationwide.

Disclaimer: This post is based on public claims made by the ransomware group "coinbasecartel". I cannot confirm the accuracy of the information. However, I would be happy to share any official statement from the affected organization to provide clarification.