HCI Informatique d'entreprise Listed by qilin Ransomware Group: Ransomware Claim — What’s Alleged & What To Do

On 2 May 2025 the ransomware group known as qilin publicly listed HCI Informatique d'entreprise, claiming it had taken internal files from the company. For anyone whose personal or professional details may sit inside those systems—employees, clients or partners of an IT services firm—the listing raises concrete questions about whether private information has left the organisation’s control and could later be misused.

Public detail remains limited. The number of people affected is unknown, and the precise contents of the files have not been confirmed beyond the group’s claim of exfiltration. What is known is enough to warrant careful attention from those who have dealt with the firm.

What happened

According to the available record, HCI Informatique d'entreprise appeared on a qilin-associated leak site on or around 2 May 2025. The group states that internal files were exfiltrated during a ransomware attack. No further verified information has been released about the date of intrusion, the technical method used, the volume of data taken, or whether encryption of systems also occurred. The number of individuals potentially affected is listed as unknown. All specifics beyond the listing itself and the claim of internal-file exfiltration remain undisclosed.

Inside qilin

Qilin is a ransomware operation that has been active in public reporting for several years. Like many contemporary groups, it typically follows a double-extortion model: data is copied before systems are encrypted, and the threat of publication is used to pressure victims. The group has been observed offering ransomware-as-a-service to affiliates, who then select targets and share proceeds. Public analyses describe qilin as focusing on mid-sized organisations across multiple sectors rather than exclusively on large enterprises. Its leak sites have previously named companies in Europe and elsewhere, though each listing is a claim by the group and does not by itself prove the full extent of any intrusion. No statements attributed to qilin about HCI Informatique d'entreprise go beyond the basic assertion that internal files were taken.

About HCI Informatique d'entreprise

HCI Informatique d'entreprise is an Entreprise de Services du Numérique (ESN) based in Perpignan, in the Roussillon region of the Pyrénées-Orientales, France. Founded in 1998, the company specialises in network engineering, maintenance, installation and related IT services. Organisations of this type routinely manage client infrastructures, hold technical documentation, contracts, employee records and, in many cases, access credentials or configuration data belonging to the businesses they support. Because an ESN sits at the centre of its clients’ digital operations, a compromise can affect not only the firm’s own staff but also the organisations that rely on its expertise. That dual exposure is why a listing of this kind carries wider consequences than a breach confined to a single consumer-facing company.

What data was at risk

The only data category named in the public record is “internal files exfiltrated in a ransomware attack.” No inventory of file types, no confirmation of personal identifiers, financial records or client data, and no count of records have been released. In the ordinary course of business an IT services firm of HCI’s profile would typically store employee personal details, client contracts, network diagrams, support tickets and possibly authentication material. Whether any of those categories were among the files claimed by qilin is unconfirmed. Readers should therefore treat the exact contents as unknown until independent verification appears.

What's at stake

For individuals, the practical risks centre on the possible later appearance of personal or professional information in criminal markets or public dumps. That can enable targeted phishing, credential stuffing or identity misuse, especially if contact details, identity documents or system access information were present. For the organisation itself, the stakes include operational disruption, loss of client confidence, potential regulatory scrutiny under European data-protection rules, and the cost of investigation and remediation. Because HCI provides services to other businesses, any client data that may have been involved could create secondary exposure for those organisations as well. None of these outcomes is certain; they are the ordinary consequences that follow when internal files leave a company’s control without authorisation.

If your data was in this claimed breach

If you have worked for, contracted with or supplied HCI Informatique d'entreprise, treat the listing as a prompt to review your own exposure. Change passwords on any accounts that may have been shared with or managed by the firm, enable multi-factor authentication where available, and watch financial and email accounts for unusual activity. Consider placing fraud alerts with relevant credit agencies if you believe identity documents could have been involved. You can also run a free exposure scan of your email address to check whether that address has already appeared in known breach data sets. Keep records of any correspondence you receive about the incident, and rely only on official channels from HCI or competent authorities for further instructions. Public information about this event is still sparse; remaining alert without panicking is the most useful immediate step.

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