Harness Inc. listed on THE SEVEN DEADLY SINS leak site

• Ransomware group: THE SEVEN DEADLY SINS
• Country: United States
• Sector: Technology
• Announcement date: October 16, 2026

The group THE SEVEN DEADLY SINS claims to have compromised Harness Inc.

The threat actor group known as THE SEVEN DEADLY SINS has officially listed the technology organization Harness Inc. on their dedicated leak site. According to the announcement made on October 16, 2026, the group alleges that they have successfully compromised the company's systems and exfiltrated sensitive information. This type of activity is characteristic of modern ransomware operations, where threat actors often employ double extortion tactics. In these scenarios, attackers not only encrypt an organization's data to disrupt operations but also steal sensitive information to use as leverage, threatening to release it publicly if a ransom is not paid.

The announcement, which was categorized as a data leak, indicates that the group has already begun publishing evidence of the breach. This typically involves providing samples of the stolen information to prove the validity of the claim to both the victim and the public. In this specific instance, the attackers have provided a sample CSV file on their leak site to demonstrate the scope of the data they claim to possess.

Details of the alleged data exfiltration

The group THE SEVEN DEADLY SINS alleges that they have exfiltrated a significant volume of data belonging to Harness Inc. The claim specifies that the breach involves over 2.5 million rows of data. Much of this information is said to originate from Salesforce records, which contain critical details regarding the company's customers and prospects.

The threat actors have reportedly stated that they provided a 72-hour window for the organization to establish contact with them following the announcement. While the specific ransom demand has not been disclosed in the source, the group has clearly signaled their intent to use the stolen data as pressure against the organization. The alleged breach involves several specific categories of sensitive information, including:

• Customer contact information
• Enterprise email addresses
• Pipeline notes
• LinkedIn profiles

The presence of such diverse data types, ranging from direct contact details to internal sales notes, suggests a targeted effort to acquire information that is highly valuable for subsequent social engineering or fraudulent activities.

Organization profile

Harness Inc. is a technology company that provides a continuous delivery and software delivery automation platform for software development teams. The company offers cloud-based tools designed to accelerate and secure modern software development processes.

Potential impact and industry implications

This incident may pose a significant risk of exposure for data belonging to Harness Inc.'s customers and business partners. The potential compromise of Salesforce data could negatively impact the organization's trade secrets and customer trust. Because the organization is a US-based entity, it may face regulatory scrutiny under state-level data privacy laws and potential notification requirements. Furthermore, there is a possibility that the exposed data could be leveraged by malicious actors for identity theft or targeted phishing campaigns.

For organizations operating within the technology sector, particularly those providing cloud-based automation and delivery tools, such incidents highlight the critical importance of securing customer-facing data and third-party integrations. Protecting CRM systems like Salesforce is essential to prevent the exposure of sales pipelines and client contact information. General defensive steps for organizations facing such threats include implementing robust multi-factor authentication, maintaining strict access controls for sensitive databases, and conducting regular audits of data exfiltration paths. As information regarding the group THE SEVEN DEADLY SINS remains limited, organizations are advised to remain vigilant against potential follow-on attacks such as targeted phishing that often follow a data leak.