PT. Bank Perekonomian Rakyat Bintan listed on coinbasecartel leak site

• Ransomware group: coinbasecartel
• Country: Indonesia
• Sector: Financial Services
• Announcement date: August 22, 2026

The ransomware group known as coinbasecartel has officially listed PT. Bank Perekonomian Rakyat Bintan on its leak site. In an announcement made on August 22, 2026, the group claimed to have successfully targeted the Indonesian financial institution, alleging that they have obtained the organization's data.

The details of the claim

According to the post published by coinbasecartel, the group claims to have targeted PT. Bank Perekonomian Rakyat Bintan. The announcement was officially created on August 22, 2026, which coincides with the date the group claims the attack took place. While the group alleges that they have secured the institution's data, they have not provided any specific details regarding the content or the volume of the information they claim to possess.

Publicly available information regarding the activities and identity of the coinbasecartel group remains limited. This lack of transparency is a common characteristic of many ransomware entities that operate through anonymous leak sites to pressure their victims.

Data and content information

Regarding the specifics of the alleged breach, the leak announcement does not include any descriptive information regarding the nature of the data involved. No data samples, file counts, or specific file types have been shared by the group to substantiate their claims. Furthermore, the listing does not contain any screenshots or visual evidence that provides information about the data's content.

• The listing names no specific data types.

Organization profile

PT. Bank Perekonomian Rakyat Bintan is a local rural bank that operates within the Bintan region of Indonesia. The institution serves its local community by providing essential banking services and credit facilities to individuals and small-scale businesses.

Potential implications and industry context

Because PT. Bank Perekonomian Rakyat Bintan operates within the financial services sector, a confirmed breach could indicate that customer data and financial records may be at risk. Such a leak could potentially lead to secondary risks for customers, including identity theft and fraud. As the institution is located in Indonesia, legal proceedings under local data protection regulations may be expected following such an event.

It is also important to consider the broader context of modern cyber threats. Many ransomware groups currently employ double extortion tactics. In these scenarios, attackers not only encrypt an organization's systems to disrupt operations but also steal sensitive data to threaten its public release. This dual approach places significant pressure on an organization's operational continuity and its reputation. When an institution faces such threats, the potential for both operational disruption and long-term data exposure is high.

For organizations in the financial sector, maintaining robust defensive postures is critical. This typically includes implementing multi-factor authentication, maintaining regular offline backups, and conducting frequent security audits to identify vulnerabilities before they can be exploited by threat actors. Given the sensitive nature of banking information, the impact of a successful data exfiltration attempt can extend far beyond the initial digital intrusion, affecting the trust and security of the entire local financial ecosystem.