CH Paper listed on Deadlock ransomware leak site

• Ransomware group: Deadlock
• Country: China
• Sector: Manufacturing
• Announcement date: June 15, 2026

The threat group known as Deadlock has listed data allegedly belonging to CH Paper on its leak site. This announcement indicates a potential data breach involving the manufacturing organization.

Details of the claimed attack

The Deadlock group announced the listing of CH Paper on its leak site on June 15, 2026. According to the claims made by the group, they gained access to the organization's systems on June 10, 2026. This timeline suggests that the threat actors maintained presence within the network for several days prior to the public announcement on the leak site.

Ransomware leak sites are platforms used by cybercriminal groups to pressure victims into paying ransoms. These groups often employ a tactic known as double extortion, where they not only encrypt an organization's data to disrupt operations but also steal sensitive information. If the ransom is not paid, the group threatens to publish the stolen data on these public sites to cause reputational and regulatory damage.

Data involved in the listing

The screenshot provided on the leak site displays folders labeled 'Data' and 'users'. However, there is no detailed information regarding the full scope or content of the leaked data. While the presence of specific folders has been noted, the group has not provided specific details regarding the volume or the exact nature of the files contained within them.

The listing identifies the following affected data types:

• User data

The presence of a 'users' folder could indicate that credentials or personal information may have been compromised. This situation could potentially lead to identity theft or targeted phishing attacks against the affected individuals.

About CH Paper

Cheng Heng Paper Products Co (Pte) Ltd is a regional manufacturer providing corrugated cardboard boxes and custom packaging solutions. With operations in Malaysia, Indonesia, and China, the company offers durable packaging products for the logistics, e-commerce, and retail sectors.

Risk assessment and industry implications

This incident may present a risk of exposure for employee or customer data within CH Paper. Because the group claims to have accessed user-related folders, the exposure of credentials or personal information remains a significant concern. Such breaches often trigger legal processes under the data protection regulations in the regions where the company operates, due to the sensitive nature of user and employee information.

Information regarding the Deadlock group is limited, making it difficult to attribute the attack to a specific known entity or to predict their future behavior. In the manufacturing sector, such incidents highlight the necessity of robust cybersecurity frameworks. Organizations in this sector can take various defensive steps to mitigate such risks, including implementing multi-factor authentication, maintaining regular offline backups, and conducting regular network monitoring to detect unauthorized access early.

When a breach is suspected, organizations typically focus on containment, investigation, and remediation. This involves identifying the entry point used by the threat actor and ensuring that the unauthorized access is fully revoked. Furthermore, companies must navigate the complex landscape of international data protection laws, especially when operating across multiple jurisdictions like Malaysia, Indonesia, and China, to ensure compliance with local notification requirements and privacy standards.