erstransportes.com.br listed on LockBit5 leak site

• Ransomware group: Lockbit5
• Country: Brazil
• Sector: Transportation
• Announcement date: April 26, 2026

The LockBit5 ransomware group has listed the Brazil-based logistics firm erstransportes.com.br on its official leak site. This announcement follows a claimed cyberattack against the organization, marking a new instance of the group targeting specific corporate entities to pressure them through public exposure.

Details of the claimed attack

According to the information disclosed on the group's leak site, the incident was discovered on April 26, 2026. The ransomware group claims that the actual attack occurred on April 14, 2026. Through this listing, the group alleges that they successfully gained unauthorized access to the systems belonging to erstransportes.com.br and managed to acquire data from the organization.

Ransomware groups often employ a strategy known as double extortion. In this model, attackers do not merely encrypt a victim's files to disrupt operations; they also exfiltrate sensitive information. The threat of leaking this stolen data on a public forum serves as additional leverage to coerce the victim into paying a ransom. By publishing the names of organizations on their leak sites, these groups aim to maximize the reputational damage and psychological pressure exerted on the target.

Data and content of the leak

Regarding the specifics of the breach, the group has not provided any details concerning the content of the leaked data. The available evidence provided by the attackers, such as screenshots, only shows a landing page rather than specific files or directories. Consequently, the exact nature and volume of the information involved in this incident remain unknown at this time.

Affected data types

• No specific data types were named in the listing.

Organization profile

ERS Transportes is a logistics and transportation company based in Brazil. The organization has been providing container transport services since 2003, establishing a long-standing presence within the regional transportation sector.

Impact and risk assessment

This incident may negatively impact the operational continuity and commercial reputation of the organization. Given the nature of the logistics sector, disruptions can have cascading effects on supply chains and client trust. Furthermore, under Brazil's LGPD regulations, the organization may face legal sanctions if it is determined that personal data has been compromised.

Based on the past activities of the LockBit group, there is a significant risk that any leaked data could be utilized in secondary attacks or identity theft attempts. This often manifests as targeted phishing attacks directed at the organization's customers and employees, where attackers use stolen information to craft highly convincing fraudulent communications.

LockBit, which has been active since 2019, operates under a Ransomware-as-a-Service (RaaS) model. This model allows various affiliates to use the group's infrastructure to conduct attacks, making the threat landscape more complex. Despite various infrastructure disruptions and law enforcement actions, the group continues to persist in its operations. To defend against such persistent threats, organizations typically focus on robust security frameworks, including multi-factor authentication, regular employee training to recognize phishing, and comprehensive data encryption to mitigate the impact of potential exfiltration.