NCH.COM listed on Clop ransomware leak site

• Ransomware group: Clop
• Country: United States
• Sector: Technology
• Announcement date: November 21, 2025

Clop claims data exfiltration from NCH.COM

The Clop ransomware group has announced a data leak involving NCH.COM on their dedicated leak site. According to the announcement made on November 21, 2025, the threat actor group claims that data belonging to the organization has been exfiltrated by their members.

In the announcement, the group provided a torrent link intended for the distribution of the alleged data. Alongside this link, the group included a warning message that criticized the security practices of the organization. This type of public shaming is a common tactic used by ransomware groups to pressure victims into meeting ransom demands through double extortion techniques.

Clop is a known threat actor group associated with TA505. This group is recognized for conducting mass data theft campaigns, often achieved by exploiting vulnerabilities found in file transfer software. Such tactics allow them to target multiple organizations by focusing on common software weaknesses.

Details of the alleged data leak

Regarding the specifics of the incident, the announcement does not provide details concerning the content of the leaked data. The group has not disclosed the specific types of files or the volume of information that was allegedly taken during the attack.

The listing names no specific data types.

About NCH.COM

NCH Software is a technology company that develops audio, video, business, and technical software. The organization is headquartered in Greenwood Village, Colorado, USA.

Risk assessment and implications

This incident suggests that customer and operational data may have been exposed to unauthorized third parties. Because the organization is based in the United States, potential data breaches of this nature could lead to legal consequences under federal regulations and state-level privacy laws.

The exposure of such data may increase secondary risks for both employees and customers. These risks include the possibility of identity theft or the execution of targeted phishing attacks using the exfiltrated information. Furthermore, given the known tactics used by the Clop group, such a leak could also negatively impact the organization's supply chain security.

In the broader context of cybersecurity, ransomware leak sites serve as a platform for threat actors to host stolen data to maximize pressure on a victim. When organizations face such threats, common defensive steps involve maintaining robust backup solutions, implementing strict access controls, and ensuring that all software, particularly file transfer tools, is regularly patched to prevent exploitation of known vulnerabilities. Organizations in the technology sector must remain vigilant against such campaigns to protect their operational integrity and customer trust.