Junta Local de Conciliación y Arbitraje listed on tengu leak site

• Ransomware group: tengu
• Country: Mexico
• Sector: Government & Defense
• Announcement date: February 10, 2026

The threat actor tengu claims a breach of Junta Local de Conciliación y Arbitraje

The threat actor known as tengu has listed the Junta Local de Conciliación y Arbitraje on its leak site. According to the announcement made on February 10, 2026, the group claims to have accessed and published various files and data that allegedly belong to the organization. This development marks a significant incident involving a public administrative body in Mexico.

The group tengu published its announcement on February 10, 2026, claiming that it has successfully exfiltrated and published data belonging to the institution. While the group has made these claims on its dedicated leak site, information regarding this specific threat actor remains limited in the public domain. The incident highlights the ongoing risks faced by public institutions from emerging ransomware groups.

Details regarding the claimed data and the event

Regarding the specific nature of the incident, the threat actor claims to have published various files and data belonging to the organization. However, the exact details of the breach remain unclear at this stage. Information regarding the total volume of data, the specific file count, or the specific ransom demand has not been provided by the group.

The listing provides limited visibility into the actual content of the breach. The contents of the files shared in the screenshots provided by the group are blurred, and there is no clear information regarding the exact nature of the leaked data. Consequently, the listing names no specific data types.

The mechanics of ransomware leak sites

In modern cyberattacks, ransomware groups often employ a tactic known as double extortion. In this scenario, attackers do not merely encrypt an organization's systems to disrupt operations; they also exfiltrate sensitive information before deploying the encryption. The attackers then threaten to leak this stolen data on a public leak site if the ransom is not paid. This tactic increases the pressure on the victim, as the threat of public exposure can cause significant reputational and legal damage, regardless of whether the organization can restore its systems from backups.

The organization profile

The Junta Local de Conciliación y Arbitraje is an institution affiliated with the Government of Mexico City. It serves as a local administrative body that provides mediation and arbitration services. Its primary function is to facilitate the resolution of labor disputes between employees and employers, making it a critical component of the local judicial and administrative landscape.

Implications and organizational risks

Given that the organization provides public services, there is a possibility that the leaked data may contain sensitive information belonging to citizens. This situation could lead to secondary risks for affected individuals, such as identity theft and targeted phishing attacks. Furthermore, the organization may face legal obligations under data protection regulations in Mexico. Such leaks targeting public institutions could damage the organization's credibility and lead to disruptions in operational processes. The threat actor's claim of publishing data may raise concerns regarding the security of the organization's digital assets.

For organizations operating in the government and public service sectors, such incidents underscore the necessity of robust cybersecurity frameworks. To mitigate these risks, organizations typically focus on several defensive strategies. These include implementing strict access controls to limit data exposure, maintaining comprehensive logging and monitoring to detect unauthorized movement of data, and conducting regular security audits. Additionally, ensuring that data is encrypted both at rest and in transit can provide an essential layer of protection against exfiltration. Strengthening incident response plans is also vital to ensure that any potential breach is contained and managed effectively to minimize impact on the public and the institution's operations.