Arkan listed on Ransomhouse leak site following claimed data breach

• Ransomware group: Ransomhouse
• Country: Egypt
• Sector: Manufacturing
• Announcement date: December 29, 2025

Ransomhouse claims data breach against Arkan

The Ransomhouse ransomware group has published a claim on its leak site regarding a potential data breach involving the manufacturing company Arkan. According to the announcement, the threat actor group has gained unauthorized access to the organization's internal data. This development follows a pattern of double extortion often employed by modern ransomware collectives, where stolen information is used as leverage against the victim.

The claim was officially posted on the Ransomhouse leak site on December 29, 2025. While the announcement was made at the end of the year, the group specifies that the actual incident or the point of initial access occurred on December 8, 2025. This discrepancy between the date of the attack and the date of the public announcement is common in ransomware operations, as groups often take time to navigate networks and exfiltrate data before making their presence known to the public.

Details of the alleged data exfiltration

At this stage of the incident, specific details regarding the volume or nature of the stolen information remain unavailable. The threat actor group has not provided any information regarding the specific types of data that were allegedly exfiltrated from Arkan's systems. Furthermore, the listing does not include any screenshots or visual evidence to substantiate the claim of a successful breach.

The listing names no specific data types or categories of information that have been compromised.

The Ransomhouse group profile

Ransomhouse is a known entity in the cyber threat landscape, having been active since 2021. The group is recognized for its focus on data exfiltration and extortion techniques. In many modern ransomware campaigns, the primary objective has shifted from merely encrypting files to stealing sensitive information to increase the pressure on the target organization to pay a ransom.

About Arkan

Arkan is an industrial company that specializes in the supply of stainless steel valves and fittings. Their product range serves critical infrastructure in several key industries, including the food, beverage, chemical, and pharmaceutical sectors. Established in Riyadh in 2019, the company focuses on manufacturing and supplying products specifically for the industrial and construction sectors.

Potential risks and industry implications

This incident may pose potential risks to the operational continuity of Arkan. Depending on the content of the leaked data, there is a possibility that corporate trade secrets or sensitive customer information could be exposed to unauthorized third parties. Such exposure can lead to various secondary consequences for a manufacturing entity.

Given the specific sector and the region in which the organization operates, this situation may create a basis for secondary attacks or targeted phishing attempts against the company or its business partners. When industrial data is compromised, attackers often use the information to craft highly convincing social engineering campaigns. Additionally, the organization may face legal obligations under relevant data protection regulations depending on the nature of the information involved.

In such scenarios, organizations typically focus on incident response, forensic investigation, and strengthening defensive postures. Common defensive steps for organizations in the manufacturing sector include implementing robust access controls, enhancing network segmentation to protect industrial control systems, and maintaining comprehensive logging to detect unauthorized data movement. Ensuring regular, offline backups and conducting employee training on phishing awareness are also standard practices to mitigate the impact of such threats.