Notaría 89 listed on payload ransomware leak site

• Ransomware group: payload
• Country: Mexico
• Sector: Professional Services
• Announcement date: March 19, 2026

Notaría 89 listed on payload ransomware leak site

The Mexican-based notary office Notaría 89 has been listed on the leak site of the ransomware group known as payload. According to the announcement published on March 19, 2026, the group claims to have successfully breached the institution's systems and exfiltrated a significant volume of data.

The claimed attack and exfiltration

The ransomware group payload has posted an announcement claiming responsibility for the incident. The group alleges that they gained unauthorized access to the internal systems of Notaría 89 and subsequently stole data belonging to the organization. This type of activity is characteristic of modern ransomware operations, often referred to as double extortion. In these scenarios, threat actors do not merely encrypt an organization's files to disrupt operations; they also steal sensitive information to use as leverage, threatening to publish the stolen data on a public leak site if a ransom is not paid.

The announcement was made on March 19, 2026, the same date the group claims the attack took place. While the group has claimed to have stolen a substantial amount of information, they have not provided specific details regarding the exact content of the alleged leaked data. The listing currently serves as a public claim of the breach by the threat actors.

Details of the alleged data breach

The payload group claims that the volume of data stolen from Notaría 89 amounts to 85 GB. Regarding the specific types of information contained within this dataset, the group has not provided any specific details or a breakdown of the files. However, based on the professional nature of the institution's operations, it is possible that the data could include sensitive documentation such as real estate transaction records, legal contracts, and various notarial documents.

• Real estate transaction records
• Legal contracts
• Notarial documents

It is important to note that the group has not provided a specific file count or any information regarding a ransom demand. The listing remains an unverified claim by the threat actor regarding the contents and the scale of the exfiltration.

About Notaría 89

Notaría 89 is a professional services firm located in the State of Mexico. The office specializes in a wide range of legal and notarial services. Led by Licenciado Luis Octavio Hermoso y Colín, the firm provides essential legal functions including real estate transactions, the drafting and execution of contracts, the issuance of powers of attorney, mortgage services, and corporate formation. Additionally, the firm handles sensitive legal matters such as the preparation of wills and property transfers.

Potential risks and organizational impact

This incident may pose a significant risk of exposing sensitive notarial records held by Notaría 89. The potential leak of client personal information and legal contracts could lead to various risks, such as identity theft or fraud perpetrated by third parties. Because notary offices handle high-value legal instruments and personal identification, the sensitivity of the data is inherently high.

Furthermore, the institution may face legal repercussions under Mexican data protection regulations due to the potential exposure of client information. Beyond the legal implications, such a breach could result in significant reputational damage and the erosion of trust with the clients who rely on the firm for confidential legal services. Information regarding the payload group remains limited in the public domain.

For organizations operating in the professional services sector, such incidents highlight the importance of robust cybersecurity frameworks. Common defensive steps include implementing multi-factor authentication, maintaining rigorous patch management schedules, and conducting regular offline backups to ensure data integrity. Additionally, monitoring for unauthorized data exfiltration and implementing strict access controls can help mitigate the impact of such breaches.