According to the hackers, among the affected entities are OSEP Mendoza and IOMA Buenos Aires.
OSEP stated that there is no evidence of unauthorized access to its systems.
The digital infrastructure of the Argentine State today faces one of its greatest tests of credibility. This happens because the hacker collective known as Chronus Team declared, on March 30, 2026, to have accessed records of the Central Bank of the Argentine Republic (BCRA) and 27 other national and provincial entities, and threatened to expose them.
Unlike other cyber groups, the attackers, who operate under aliases such as L0stex, adrxx and Lizard, assure that their motivation is not profit, but rather public exposure of more than 8 million lines of sensitive information.
This decentralized cell is not unknown in the region. This is because since 2021 there has been violated health and fiscal systems in Mexico, in addition to executing similar operations in Brazil and Venezuela.
Their strategy is based on identifying technical “cracks” in the state infrastructure, such as obsolete portals, misconfigurations and the recycling of access credentials, which allows them to extract massive databases and then use them as a pressure tool in forums and Telegram channels.
The magnitude of the incident is reflected in the diversity of the compromised portfolios. Among the main objectives is the BCRA, with an estimated leak of 45,000 records. Pillars of the health system are also involved, such as the Institute of Medical Assistance Work (IOMA) of Buenos Aires and the Social Work of Public Employees (OSEP) of Mendoza; Between them, the volume of personal data exposed would exceed 3 million, as report local media.
The list extends to critical areas of the national administration, reaching the Ministries of Health, Education and Security, the Chief of Staff, the National Disability Agency and various provincial security forces, which poses a scenario of systemic vulnerability in the heart of the State.
A gap between the leak and the official version
Despite the forcefulness of the announcement, the official response has been unanimous in its rejection. The OSEP of Mendoza, for example, assured that there is no evidence of unauthorized access to its servers.
This disconnection between the version of the attackers and that of the institutions generates an informational “limbo” common in cybersecurity incidents, where the attacker seeks notoriety while the State tries to contain the panic and protect its digital reputation.
Independent analysts, such as the check specialized VECERTRadar, They claim to have tracked the activity of Chronus Teamconfirming that the group prioritizes media impact over profit. However, at the time of writing this note, there is no external audit that validates the total volume of leaked data.
This scenario is part of a trend that positions Latin America as a critical region in the face of cybercrime. While Argentina assesses its damage, Mexico continues to lead the statistics of attack attempts in the region, facing threats ranging from ransomware to illegal cryptocurrency mining.
As CriptoNoticias recently reported, an investigation by the cybersecurity firm Gambit Security revealed an incident of similar proportions in Mexican territory. According to the report, an attacker would have used the Claude artificial intelligence model to breach nearly 150 GB of sensitive data.
The leak, which would have occurred between December 2025 and January 2026, would compromise records of 195 million taxpayers and electoral registry data, affecting key agencies such as the Tax Administration Service (SAT) and the National Electoral Institute (INE).
As in the Argentine case, the official response in Mexico was a categorical refusal. Both the SAT and the INE declared that they had not identified illegitimate access or anomalous behavior in their systems.
This recurring discrepancy between reports from security firms and government versions underlines the challenge facing the region. This is a constant fight for transparency in the midst of a digital infrastructure that, given the advance of tools such as artificial intelligence, becomes increasingly difficult to shield.