Milhench Supply Company listed on sinobi leak site

• Ransomware group: sinobi
• Country: United States
• Sector: Professional Services
• Announcement date: December 16, 2025

Sinobi group claims attack on Milhench Supply Company

The threat actor known as sinobi has listed Milhench Supply Company on its leak site, alleging a data breach. This announcement, made on December 16, 2025, marks a significant escalation in the pressure placed on the organization by the threat group.

According to the claims made by the sinobi group, the organization's data has been encrypted. To support their claims of a successful intrusion, the group has shared screenshots that purportedly show the company's operational processes. These images serve as evidence of the incident within the group's public platform.

The group has issued a ransom demand of 8,400,000 dollars in exchange for the return of the data and to prevent further exposure. While the group has provided some visual evidence, the full extent and specific details regarding the total volume of the compromised data remain unknown at this time.

Details of the alleged data breach

The evidence provided by the sinobi group consists of screenshots displaying various tables. These tables appear to contain sensitive information related to the company's internal workings. Specifically, the shared content includes:

• Inventory data
• Operational data

While these screenshots confirm that certain internal information has been accessed, there is no detailed information regarding the full scope of the compromised data. The exact number of files or the total size of the stolen data has not been disclosed by the threat actor.

About Milhench Supply Company

Milhench Supply Company is a family-owned business that has been providing cleaning and operational supplies to various industries for over three generations. Based in New England, they offer inventory management and rapid delivery services to sectors including agriculture, healthcare, hospitality, and government.

Analysis and potential impact

This incident may cause disruptions in the company's business operations and pose a risk of exposing sensitive business information. Because the company is based in the United States, potential data breaches may trigger legal processes under state-level privacy laws and sectoral regulations. Furthermore, the potential dissemination of leaked data to third parties could create secondary risks for the company's clients and supply chain.

Public information about the sinobi group is limited. However, the group's ransom demand and encryption method suggest they may be employing a double-extortion strategy. In a double-extortion scenario, attackers not only encrypt an organization's data to halt operations but also steal sensitive information to use as leverage, threatening to leak it publicly if the ransom is not paid.

For organizations operating in the professional services and supply sectors, such incidents highlight the importance of robust cybersecurity frameworks. Common defensive steps for organizations include maintaining offline, immutable backups to ensure data can be restored without paying a ransom. Additionally, implementing strict access controls and multi-factor authentication can help mitigate the risk of unauthorized entry. Monitoring network traffic for unusual patterns and conducting regular security audits are also vital components of a proactive defense strategy to protect against the evolving tactics used by ransomware groups.