Reliance Audit listed on Everest ransomware leak site

• Ransomware group: Everest
• Country: Singapore
• Sector: Professional Services
• Announcement date: September 25, 2026

Everest group claims data breach at Reliance Audit

The ransomware group known as Everest has listed the Singapore-based professional services firm Reliance Audit on its leak site. Through this announcement, the group claims to have successfully compromised the institution's data and has initiated a countdown process to pressure the organization into establishing contact.

The event was announced on September 25, 2026. According to the claims made by the Everest group, the breach involves a significant volume of information. The group asserts that they have stolen a total of 65 GB of data, which is comprised of 55,200 individual files. The group has indicated that these files are scheduled for publication on their leak site if their demands are not met.

Details of the claimed stolen data

The information provided by the threat actor suggests that the breach involves a wide array of sensitive documentation. The data allegedly exfiltrated by the Everest group includes various types of records essential to the firm's operations and its clients' business activities. The specific categories of data mentioned in the claim include:

• Accounting records
• Audit documents
• Financial data
• Employment records
• Operational documents

The exposure of such a diverse range of documentation suggests that the attackers may have gained access to internal administrative systems and client-facing databases. Such data types are highly sensitive and are often targeted in double extortion schemes, where attackers not only encrypt systems but also threaten to leak information to maximize leverage.

About Reliance Audit

Reliance Audit PAC is a professional services firm based in Singapore. Established in 1998, the company has a long-standing presence in the region, providing specialized services in auditing, taxation, accounting, and various other financial-related consulting matters. As an established entity in the professional services sector, the firm manages a variety of sensitive financial and corporate information for its clientele.

Potential impact and industry implications

The actions taken by the Everest group pose a significant risk of exposure for sensitive corporate and personal data within Reliance Audit. Because the organization operates within the professional services sector, the potential exposure of confidential client information could lead to serious legal and commercial consequences. The dissemination of such data to third parties may create a basis for identity theft or targeted phishing attacks against the firm or its clients.

The Everest group is known to be a Russian-speaking entity that has been active since 2020. Their typical operational tactics involve data exfiltration and extortion, a method often used to pressure organizations into paying ransoms to prevent the public release of stolen information. This