A Brazilian cybercriminal group has claimed responsibility for leaking 15GB of data allegedly belonging to employees of Petroamazonas, Ecuador's former state oil company, and the CEPAM oil service center. The breach, which includes hashed credentials, remains unconfirmed by authorities but highlights growing threats to Latin America's energy sector.

In a concerning development for Ecuador's energy infrastructure, a Brazilian hacker group has claimed responsibility for a massive data leak of 15 gigabytes containing sensitive information from Petroamazonas employees and hashed credentials linked to the Centro de Atención Petrolera (CEPAM), the country's oil service center. The incident, first reported by the cybersecurity firm CTI Alert on September 2, 2026, has not yet been officially confirmed by Ecuadorian authorities.

This alleged breach underscores the persistent vulnerabilities in Latin America's energy sector, which has become a prime target for cybercriminals seeking valuable personal data and operational intelligence.

What's in the Leaked Data?

According to initial analysis by cybersecurity researchers, the leaked package reportedly contains:

  • Personal information of Petroamazonas employees, including names, national ID numbers (cédulas), job titles, and hire dates.
  • Hashed credentials – passwords encrypted using algorithms like MD5 or SHA, which could potentially be cracked through brute-force attacks.
  • Internal documentation related to CEPAM operations, the facility responsible for monitoring oil production in Ecuador's Amazon region.

The Brazilian group, whose identity remains undisclosed, allegedly accessed internal systems of the state-owned company, putting sensitive data of workers and contractors at risk.

Official Response and Context

As of now, Petroamazonas – which was integrated into Petroecuador in 2021 – has not issued an official statement. However, sources close to Ecuador's Ministry of Energy indicate that incident response protocols have been activated. The lack of immediate confirmation is typical in such cases, as companies often need time to verify the authenticity of leaked data.

This incident is not isolated. In 2020, Petroecuador suffered a devastating ransomware attack that halted operations for several days. More recently, in 2021, the state-owned telecommunications company CNT experienced a significant breach. These events highlight a worrying trend: critical infrastructure in the region remains highly vulnerable to cyber threats.

Why CEPAM Matters

The CEPAM (Centro de Atención Petrolera) is a crucial logistics and maintenance hub for Ecuador's oil transport fleet. While the leaked data appears to focus on personnel information rather than operational technology (OT) systems, any compromise of this facility raises concerns about potential future attacks on industrial control systems.

What Does 'Hashed Credentials' Mean?

For those unfamiliar with cybersecurity terminology, a hash is a mathematical algorithm that transforms a password into an unrecognizable string of characters. However, hashing is not foolproof – if the hashes are weak (e.g., without salt), they can be decrypted using tools like Hashcat or John the Ripper. This means that even though passwords aren't in plain text, they could still be at risk.

Recommendations for Affected Individuals

While waiting for official confirmation, cybersecurity experts strongly advise current and former Petroamazonas employees to take the following precautions:

  • Change passwords immediately, especially if you reuse the same credentials across multiple services.
  • Enable two-factor authentication (2FA) on all accounts to add an extra layer of security.
  • Monitor bank statements and report any suspicious activity to financial institutions.
  • Be wary of phishing emails that request personal information or login credentials – these often follow data breaches.

If confirmed, this leak would be one of the largest in Ecuador's public sector history, surpassing previous incidents in volume. The cybersecurity community is closely monitoring the situation, and further developments are expected in the coming hours.

Source: CTI Alert (via social media) | Publication date: September 2, 2026