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

On June 15, 2026, the ransomware group thegentlemen listed Calipage Humblet on its leak site. The number of people whose information may have been involved is not known, and the company has not issued a public statement confirming the extent of any access. The listing indicates that internal files were taken during a ransomware operation, which matters because the firm handles records tied to local customers, suppliers, and employees in the Herstal and Blegny areas.

What happened

The incident centers on a ransomware attack in which files were removed from Calipage Humblet systems. The only confirmed detail is the June 15, 2026 listing by thegentlemen, which states that internal files were exfiltrated. No information has been released about the date of the intrusion itself, the volume of data taken, or whether the files were later published. The scale of the operation and the method used to gain access remain undisclosed.

The group behind it: thegentlemen

Thegentlemen is a ransomware operator that targets organizations, encrypts their systems, and removes copies of files. When payment demands are not met, the group lists victims on a public leak site and may release portions of the stolen material. This approach has been documented in multiple prior incidents involving companies in Europe and elsewhere. In the present case the group claims responsibility for the Calipage Humblet listing; no independent confirmation of the data’s authenticity or completeness has been made public.

Calipage Humblet and its sector

Calipage Humblet, also known as Papeterie Humblet, is a family-owned business established in 1910 that supplies office and school materials and offers printing and copying services. It operates mainly in the Herstal and Blegny regions of Belgium and forms part of the Calipage Benelux network. Firms of this type routinely maintain customer order histories, supplier contracts, employee records, and documents produced during printing work. A breach at such an organization can affect both the business’s own operations and the private information of individuals and smaller entities that rely on its services.

What was likely exposed

The only data category named in connection with the listing is internal files removed during the ransomware attack. No inventory of specific record types or file counts has been released. Organizations in the office-supply and printing sector commonly hold customer contact details, billing information, and administrative documents; however, whether any of these categories were among the exfiltrated material is unconfirmed.

What's at stake

Individuals whose records appear in the taken files could face misuse of contact or financial details for fraud or unwanted contact. The company itself may experience operational disruption if systems remain encrypted or if client trust declines. Because the exact contents of the files are not known, the practical consequences for any one person cannot yet be assessed with certainty.

Were you affected?

Begin by watching statements from Calipage Humblet and any official Belgian data-protection notices. Change passwords for accounts linked to the company and enable multi-factor authentication where available. A free exposure scan of your email address against known breach data sets can indicate whether your information has appeared in previously published lists.

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