Deck India Engineering Pvt. Ltd listed on Tengu ransomware leak site

• Ransomware group: Tengu
• Country: India
• Sector: Manufacturing
• Announcement date: January 19, 2026

Tengu ransomware group claims data breach at Deck India Engineering Pvt. Ltd

The threat actor known as Tengu has officially listed Deck India Engineering Pvt. Ltd. on its dedicated leak site. According to the announcement published on January 19, 2026, the group claims to have successfully gained unauthorized access to the organization's data, leading to a purported data breach.

This type of activity is characteristic of modern ransomware operations, which frequently employ double extortion tactics. In such scenarios, attackers do not merely encrypt an organization's systems to disrupt operations; they also exfiltrate sensitive information. The goal is to threaten the victim with the public release of this data on a leak site to increase pressure for ransom payments. By publishing the names of targeted organizations, these groups aim to damage the victim's reputation and create leverage during negotiations.

Details of the alleged incident

The announcement made by the Tengu group was published on January 19, 2026, the same day the group claims the attack occurred. The listing on the leak site serves as a public notification of the alleged compromise. While the group has added the company to its list of victims, the specific details regarding the nature of the breach remain limited.

Regarding the specific types of information involved in this incident, the listing names no specific data types. While the group's announcement includes information regarding the company's general operations, it does not clearly define the exact categories or contents of the data that have allegedly been stolen.

The organization profile

Deck India Engineering Pvt. Ltd. is an engineering firm based in Pune, India. Established in 1998, the company specializes in providing various heat treatment services, including liquid nitriding, nitro carburizing, and gas nitriding. Beyond its service offerings, the firm is also involved in the manufacturing and supply of heat treatment equipment and furnaces designed for a wide range of industrial applications.

Potential impact and security considerations

This incident may present a significant risk of exposure for the organization's operational data and client information. The publication of such data on a public leak site could potentially harm the company's commercial reputation and create negative impacts across its supply chain. When manufacturing firms face data exposure, the resulting loss of trust can affect relationships with various industrial partners and clients.

Publicly available information regarding the Tengu group remains limited, making it difficult to determine the full scope of their capabilities or typical targets. For organizations operating in the manufacturing sector, such incidents underscore the importance of robust cybersecurity frameworks. To mitigate the risks associated with data breaches, it is often advisable for organizations to review their data security processes and evaluate potential legal notification obligations that may arise in the event of a confirmed breach.

Defensive strategies for such entities typically involve implementing strict access controls, maintaining comprehensive backups, and conducting regular security audits to identify vulnerabilities before they can be exploited by threat actors. As the threat landscape evolves, continuous monitoring and a proactive approach to data protection remain essential for maintaining operational integrity and protecting sensitive corporate and client information.