Carvimsa listed on Black Shrantac ransomware leak site

• Ransomware group: Black Shrantac
• Country: Peru
• Sector: Manufacturing
• Announcement date: November 13, 2025

Black Shrantac claims responsibility for Carvimsa data breach

The Peruvian manufacturing company Carvimsa has been listed on the leak site of the ransomware group known as Black Shrantac. According to the announcement made on November 13, 2025, the threat actor claims to have successfully exfiltrated a significant volume of data belonging to the organization. The group alleges that they have obtained 250 GB of information, which was announced on the same day as the claimed attack date.

The incident involves a classic double extortion tactic often employed by modern ransomware groups. In such scenarios, attackers do not merely encrypt an organization's systems to disrupt operations; they also steal sensitive information to use as leverage. By threatening to publish stolen data on public leak sites, these groups attempt to exert maximum pressure on the victim to pay a ransom. While the specific ransom demand has not been disclosed in the announcement, the presence of the company on a leak site indicates that the group is using the threat of data exposure as a primary weapon.

Information regarding the specific identity, motives, or technical capabilities of the Black Shrantac group remains limited in the public domain. This lack of public intelligence makes it difficult for security researchers to attribute the attack or predict the group's future behavior, a common challenge when dealing with emerging or less documented ransomware entities.

Details of the alleged data exfiltration

The announcement by Black Shrantac alleges that the compromised information is extensive, covering various aspects of the company's internal operations. The threat actor claims that the stolen data includes documents related to manufacturing and operational processes, as well as sensitive customer and financial information. The screenshots provided by the group as evidence of the breach suggest a deep penetration into the company's digital environment.

The specific types of data identified in the announcement include:

• Customer information
• Sales data
• Custom order details
• Billing and payment information
• Costing data
• Production data
• Machine performance reports

The exposure of such a diverse range of data points suggests that the attackers may have gained access to multiple internal systems, ranging from administrative and financial databases to industrial control or operational technology environments, given the inclusion of machine performance reports.

About Carvimsa

Carvimsa is a manufacturing company based in Peru. The organization specializes in providing plastic packaging and recycling solutions. Their production capabilities include the manufacturing of PET preforms and bottles, which are essential components for the food and beverage industry.

Potential impact and industry implications

The alleged leak of this data carries significant risks for Carvimsa. The exposure of manufacturing and operational documents could lead to the compromise of the company's trade secrets, potentially providing competitors with insights into their proprietary processes. Furthermore, the exposure of financial and customer information poses a direct threat to customer privacy and could create secondary risks for the company's entire supply chain and its various partners.

From a legal and regulatory perspective, the company may face potential sanctions under the data protection regulations established in Peru. Beyond the immediate legal concerns, the stolen data could be exploited by malicious actors for secondary crimes, such as identity theft or highly targeted phishing attacks against the company's employees, customers, or partners.

For organizations operating within the manufacturing sector, such incidents highlight the critical importance of robust cybersecurity frameworks. Protecting industrial data and customer information requires a multi-layered defense strategy. This typically includes implementing strict access controls, maintaining offline backups, and ensuring continuous monitoring of both IT and operational technology networks. Organizations must also be prepared for the regulatory and reputational consequences that follow a data breach, emphasizing the need for comprehensive incident response plans and proactive data protection measures to mitigate the impact of potential extortion attempts.