Grupo Baston Aerossol (baston.com.br) Listed by fog Ransomware Group: Ransomware Claim — What’s Alleged & What To Do

On 4 March 2025 the ransomware group known as fog listed Grupo Baston Aerossol, the Brazilian firm behind baston.com.br, among its claimed victims. According to the group’s leak-site notice, 88.3 GB of internal files were exfiltrated during a ransomware attack. The number of people whose data may have been involved remains unknown, and public detail beyond the listing itself is limited.

Because the claim originates solely from the threat actor and has not been independently confirmed in open sources, the precise scope and impact of the incident are still unclear. What is known so far is enough to warrant attention from anyone who has dealt with the company as an employee, supplier or customer.

Inside the incident

The only concrete public marker is fog’s listing of Grupo Baston Aerossol on 4 March 2025. The group states that it obtained 88.3 GB of internal files through a ransomware operation. No further technical indicators—such as the initial access vector, the date the intrusion began, encryption status of systems, or any ransom demand—have been disclosed in the available record. The number of individuals affected is likewise unreported. In short, the incident is known only through the actor’s claim of data theft; everything else remains undisclosed.

Who is fog?

Fog is a ransomware operation that surfaced in public reporting in 2024 and has since maintained a leak site used for double-extortion pressure. Like many contemporary groups, it typically encrypts victim systems while simultaneously copying data, then threatens to publish the material if payment is not made. Its victims have spanned manufacturing, professional services and other mid-sized organisations across several regions. Fog’s listings are therefore claims of compromise rather than verified admissions by the organisations named. In this case the group asserts that it holds internal files belonging to Grupo Baston Aerossol; that assertion has not been corroborated by independent forensic disclosure.

Grupo Baston Aerossol (baston.com.br) and its sector

Grupo Baston Aerossol is a Brazilian manufacturer whose public website, baston.com.br, presents it as a producer of aerosol products. Companies in this industrial niche commonly maintain production records, supply-chain contracts, employee personnel files, customer order histories and quality-control documentation. A breach of such an organisation can therefore touch both commercial secrets and personal information belonging to staff, partners and clients. Because the firm operates in a regulated manufacturing environment, any unauthorised release of internal material carries potential regulatory and reputational consequences in addition to the direct privacy risks for individuals.

The information in question

The sole data category named in the public claim is “internal files” totalling 88.3 GB. No inventory of file types, databases or personal-data fields has been released. Organisations of this kind typically store employee records (names, contact details, identification numbers, payroll data), customer and supplier contracts, product formulations, logistics information and internal correspondence. Whether any of those categories were among the files fog claims to hold is unconfirmed. Until more specific disclosure occurs, the exact contents of the 88.3 GB remain unknown.

Why it matters

Even without a confirmed list of affected individuals, the real-world risks are straightforward. If employee or contractor data were included, those people face possible identity-related fraud, phishing campaigns that exploit knowledge of their workplace, or unsolicited contact. Commercial partners could see sensitive pricing, product or logistics details surface, creating competitive or contractual exposure. For the organisation itself, the incident raises questions of operational continuity, regulatory notification duties under Brazilian data-protection rules, and the cost of forensic investigation and remediation. Because the scale of personal impact is still unknown, a cautious assumption that some personal data may have left the network is prudent until proven otherwise.

What to do if you're exposed

Anyone who has a relationship with Grupo Baston Aerossol—current or former employees, suppliers, customers—should treat the claim as a prompt for basic hygiene rather than panic. Practical first steps include:

• Monitor bank and credit statements for unfamiliar activity and enable transaction alerts where available.
• Change passwords on any accounts that reused credentials linked to work email or company portals, and enable multi-factor authentication.
• Be alert to phishing messages that reference the company, aerosol products or internal projects; verify unexpected requests through a separate channel.
• If you are an employee or contractor, ask the organisation’s security or HR team whether your personal data is believed to have been involved and what support is offered.
• Consider placing a fraud alert with relevant credit bureaus if you hold Brazilian or other financial accounts that could be targeted.

Readers can also run a free exposure scan of their email address to check whether that address has already appeared in known breach data sets. Such a check does not confirm involvement in this specific incident, but it provides an additional data point for personal risk assessment.

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