Knight ransomware group claims data breach at DAIHO INDUSTRIAL Co.,Ltd.

• Ransomware group: Knight
• Country: Japan
• Sector: Manufacturing
• Announcement date: December 13, 2023

Knight ransomware group claims data breach at DAIHO INDUSTRIAL Co.,Ltd.

The ransomware group known as Knight has issued a leak announcement claiming to have compromised data belonging to the Japan-based DAIHO INDUSTRIAL Co.,Ltd. According to the group's announcement, the breach was identified on December 13, 2023, the same day the attack was allegedly carried out.

Details of the alleged attack

The Knight group published a leak announcement regarding DAIHO INDUSTRIAL Co.,Ltd. on December 13, 2023. The threat actors claim to have successfully gained access to several critical areas of the company's infrastructure, specifically targeting the accounting, finance, HR, and IT systems. Furthermore, the group has stated that they have encrypted all of the company's backups, a common tactic used to increase pressure on victims during a cyberattack.

To support their claims of a successful intrusion, the group released a series of files as proof of the breach. These files include passport copies and various other corporate documents, which the group uses to demonstrate the level of access they have achieved within the victim's network.

Potential data exposure and affected information

Based on the files released by the threat actors, the alleged leak may contain a wide range of sensitive information. The data involved in this incident could include various types of highly confidential documentation that could be used for malicious purposes. The specific types of data identified in the claim include:

• Passport copies
• Accounting records
• Financial data
• HR data
• IT inventories
• Audit reports

The exposure of such diverse datasets, ranging from personal identification to internal corporate audits, highlights the breadth of the alleged compromise.

About DAIHO INDUSTRIAL Co.,Ltd.

Founded in 1937, DAIHO INDUSTRIAL Co.,Ltd. is a Japan-based company specializing in the plastics processing industry. The organization is involved in the manufacturing and sale of various plastic products designed for several different sectors, including automotive, home electronics, and office automation.

Impact assessment and industry implications

This breach may pose a significant risk of identity theft due to the exposure of personal information belonging to both employees and executives. Beyond the risk to individuals, the disclosure of corporate financial and operational data could weaken the company's competitive advantage and lead to disruptions in its business operations. Additionally, the organization may face legal sanctions under Japanese personal data protection regulations as a result of this incident.

Regarding the threat actor, public information about the Knight group remains limited. However, the group's adoption of double extortion tactics—a method where attackers both encrypt data and threaten to leak it—may increase the risk of data publication or sale. In such scenarios, organizations often face the difficult choice of paying a ransom to prevent data exposure or attempting to recover from backups, which, in this specific claim, are said to be encrypted.

For organizations operating within the manufacturing sector, this incident underscores the importance of robust cybersecurity frameworks. Common defensive steps for organizations include maintaining offline, immutable backups to mitigate the impact of encryption, implementing strict access controls on sensitive systems like HR and finance, and conducting regular audits to identify vulnerabilities. Protecting against double extortion requires a multi-layered approach to both network security and data loss prevention to ensure that even if a breach occurs, the sensitive information remains protected and the business can continue to operate.