Columbia TI Listed by bert Ransomware Group: Ransomware Claim — What’s Alleged & What To Do

Ransomware groups continue to target technology providers as a way to pressure both the primary victim and its clients, reflecting a broader pattern in which attackers combine encryption with data theft and public leak-site listings. In this environment, even a single listing can raise immediate questions for organisations and individuals whose information may have been involved.

On 5 June 2025, the ransomware group known as bert listed Columbia TI on its leak site, claiming to have exfiltrated internal files during a ransomware attack. The number of people affected remains unknown, and public detail on the precise scope is limited. Because Columbia TI supplies IT services across Brazil, any confirmed exposure of internal material could carry consequences for the company and for the businesses that rely on it.

What happened

According to the available record, Columbia TI was listed by the bert ransomware group on 5 June 2025. The listing asserts that internal files were exfiltrated in the course of a ransomware attack. No further public confirmation of the attack method, the volume of data taken, the exact date of intrusion, or the number of individuals affected has been released. The facts state only that internal files were claimed to have been removed; everything else about timing, scale and technical details remains undisclosed.

The group behind it: bert

Bert is a ransomware operation that has appeared on public threat-intelligence trackers as a group that encrypts systems and simultaneously steals data for leverage. Like many contemporary ransomware actors, it maintains a leak site on which it posts the names of organisations it claims to have compromised, often accompanied by samples or full archives if ransom negotiations fail. The group’s typical pattern involves double extortion: victims face both operational disruption from encryption and the threat of public data release. In the present case, the listing of Columbia TI constitutes a claim by the group; independent verification of the intrusion or of the contents of any stolen material has not been provided in the public record.

Who is Columbia TI?

Columbia TI, also referred to as Columbia Integração, is a Brazilian technology firm that delivers IT solutions focused on cloud services, cybersecurity and infrastructure. Its stated purpose is to support digital transformation for businesses operating in Brazil. Organisations of this type routinely manage client environments, hold configuration data, credentials, project documentation and, in many cases, personal or commercial information belonging to their customers. A breach at an IT services provider is therefore consequential not only for the provider itself but also for the wider ecosystem of companies that depend on its platforms and expertise.

What was likely exposed

The facts name only “internal files” as having been exfiltrated. No inventory of specific file types, databases or personal data categories has been disclosed. Technology consultancies and managed-service providers typically store network diagrams, access credentials, contracts, employee records, client project files and operational logs. Whether any of those categories were among the material claimed by bert cannot be confirmed from the public information available. Readers should therefore treat the precise contents as unconfirmed.

Why it matters

For individuals whose data may have been held by Columbia TI or its clients, the principal risks are identity misuse, targeted phishing and further credential stuffing if login details or personal identifiers were present. For the organisation, the listing creates reputational pressure, potential contractual liabilities toward clients, and the operational cost of incident response and recovery. Because Columbia TI operates in the cybersecurity and infrastructure space, any confirmed compromise also raises questions about the security of the environments it manages for other Brazilian businesses. These consequences remain contingent on the still-undisclosed details of what was actually taken.

If your data was in this claimed breach

If you have a relationship with Columbia TI or with any of its clients, treat the possibility of exposure seriously even while the exact contents remain unconfirmed. Change passwords on related accounts, enable multi-factor authentication where available, and monitor financial and email accounts for unusual activity. Be alert to phishing messages that reference the company or recent service interactions. As a practical next step, you can run a free exposure scan of your email address to check whether that address has already appeared in known breach data sets; such a scan does not prove involvement in this specific incident but can indicate whether your information is circulating more widely.

AICompiled with AI assistance from public sources and published under our editorial standards.