Hart Listed by thegentlemen Ransomware Group: Ransomware Claim — What’s Alleged & What To Do

Ransomware groups continue to target mid-sized industrial and wholesale firms across Europe, often listing victims on leak sites to pressure payment after data theft. In this landscape, the February 2025 listing of Polish automotive parts wholesaler Hart by the group known as thegentlemen fits a familiar pattern of claimed double-extortion attacks. Public detail remains limited, yet the incident matters because organisations of this type hold operational, commercial and sometimes personal data that can affect employees, suppliers and customers if exposed.

What is known so far is that Hart was named on thegentlemen’s leak site as a victim of a ransomware attack involving the exfiltration of internal files. The number of people affected has not been disclosed, and independent confirmation of the full scope is not yet available. The listing itself is a claim by the group rather than a verified statement from the company.

What happened

According to publicly reported information, Hart was listed by thegentlemen ransomware group on or around 19 February 2025. The group claims that internal files were exfiltrated during a ransomware attack. No further technical details—such as the initial access vector, the specific ransomware variant used, the volume of data taken, or whether systems were encrypted—have been released in the available record. The number of individuals potentially affected is listed as unknown. Hart has not, in the facts provided, issued a public confirmation or denial of the listing. As with many such claims, the leak-site entry serves as the primary public signal that an incident may have occurred.

Inside thegentlemen

thegentlemen is a ransomware operation that has appeared in public reporting as a relatively recent actor employing double-extortion tactics: encrypting systems while also stealing data and threatening to publish it if a ransom is not paid. Like many contemporary groups, it maintains a leak site where it names alleged victims and sometimes posts samples of stolen material to increase pressure. Public analyses of the group describe typical ransomware behaviours—phishing or exploitation of remote-access services for initial entry, lateral movement, data staging and exfiltration, followed by encryption and extortion demands—though the precise methods used against any single victim, including Hart, are not detailed in the available facts. The group’s listing of Hart should be treated as an unverified claim unless and until the organisation or independent investigators state the intrusion and the data theft.

Hart and its sector

Hart, formally HART Sp. z o.o., is a Polish company founded in 1990 that specialises in the wholesale of parts and accessories for passenger cars, vans and motorcycles. It also supplies workshop equipment and electric scooters, offering both branded goods from established suppliers and its own private-label lines such as HART, HART Premium, M.Line, e-HART, Presspower and Sigert. Firms in the automotive aftermarket wholesale sector typically maintain large catalogues of product data, supplier and customer records, inventory systems, logistics information and internal financial or operational documents. A breach at such an organisation is consequential because the sector sits in the middle of complex supply chains; disruption or data exposure can affect workshops, retailers, fleet operators and individual vehicle owners who rely on timely parts availability, and it can also expose commercial relationships and pricing information that competitors or fraudsters might exploit.

What data was at risk

The available facts state only that internal files were exfiltrated in a ransomware attack. No specific categories—such as customer lists, employee records, financial documents or technical drawings—have been named or confirmed. Organisations of Hart’s type commonly hold supplier contracts, order histories, inventory databases, employee contact and payroll information, and customer account details. Because the exact contents of the claimed exfiltration remain undisclosed, it is not possible to state with certainty which of these, if any, were taken. Readers should treat any more granular descriptions circulating online as unconfirmed unless they originate from Hart itself or from a formal regulatory notification.

What's at stake

For individuals whose data may have been among the internal files, the practical risks include targeted phishing, identity misuse or social-engineering attempts that leverage knowledge of business relationships. Employees could face exposure of personal or employment-related information; suppliers and customers could see commercial terms or contact details used for fraud. For Hart itself, the stakes include potential operational disruption, reputational damage among trade partners, regulatory scrutiny under data-protection rules, and the cost of investigation and remediation. Because the scale of the incident and the precise data types remain unconfirmed, the full extent of these risks cannot yet be quantified. The absence of a confirmed victim count further means that many people who deal with Hart may not know whether they are affected.

What to do if you're exposed

If you have a past or present relationship with Hart—as an employee, supplier, customer or partner—treat the listing as a signal to increase vigilance rather than as proof that your specific data was taken. Monitor bank and credit accounts for unusual activity, be alert to unexpected emails or calls that reference Hart or automotive-parts orders, and consider placing fraud alerts with credit bureaux if you believe personal identifiers may have been involved. Change passwords on any accounts that reused credentials associated with Hart-related systems, and enable multi-factor authentication wherever possible. You can also run a free exposure scan of your email address to check whether it has already appeared in known breach datasets; such a check will not confirm or rule out involvement in this specific incident, but it can indicate whether your address has surfaced elsewhere and help you prioritise further protective steps. If Hart or a data-protection authority later issues formal notices, follow the guidance provided in those communications.

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