MicroChem Listed by thegentlemen Ransomware Group: Ransomware Claim — What’s Alleged & What To Do
MicroChem was listed by thegentlemen ransomware group on March 19, 2026, after internal files were exfiltrated in a ransomware attack. Individuals should check whether their information was exposed and take protective steps if necessary.
Breaking down the breach
The incident came to public attention through a listing on thegentlemen's leak site. The entry identifies MicroChem as the target and asserts that files were taken in the course of a ransomware operation. No additional details on the date of the intrusion, the volume of data, or the method of access have been disclosed. The number of people whose information may be involved is listed as unknown.
Who is thegentlemen?
Thegentlemen is a ransomware group that has appeared in public reporting for encrypting systems and threatening to publish stolen data. Such groups commonly maintain leak sites where they list victims as part of pressure tactics. In this case the group claims responsibility for the MicroChem incident through its listing; independent confirmation of the claim has not been made public.
Who is MicroChem?
MicroChem, formally Microchem - Ensaios e Analises Tecnicas, Lda, is a laboratory founded in 2006 and based in Matosinhos, near Porto, Portugal. It operates under CAE 71200 and provides technical testing, material analysis, quality control, and compliance verification services to industrial clients. Organizations in this sector routinely receive and generate records tied to client projects, regulatory submissions, and internal operations.
The information in question
The listing refers only to “internal files exfiltrated in ransomware attack.” No further breakdown of file categories or data fields has been released. Laboratories of this type commonly hold client correspondence, test results, equipment logs, and compliance documentation, yet the precise contents involved here are unconfirmed.
- Internal files referenced in the listing
- No confirmed categories or record counts
- Exposure limited to the group’s unverified claim
The real-world impact
Any release of laboratory records could affect client businesses that rely on the confidentiality of test outcomes and compliance data. For individuals, the main concern would be indirect if their details appear in project-related files. The organization faces operational disruption and potential loss of client trust while the accuracy of the listing remains under review.
Were you affected?
Begin by monitoring official statements from MicroChem. Review any correspondence from the company regarding the incident. Individuals can also run a free exposure scan of their email address against known breach datasets to check for prior appearances of their information.
AICompiled with AI assistance from public sources and published under our editorial standards.
How this breach connects
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Publicly posted by thegentlemen — unverified claim, pending independent verification
Breach listings — particularly those originating from ransomware or leak sites — are third-party claims that may be unverified, incomplete, or inaccurate. A listing does not by itself confirm that a breach occurred or that any specific data was exposed. Severity is an automated assessment, not a definitive rating. Verification status is shown where available.
Attributions to threat groups and methods reflect public reporting and, in some cases, unverified claims made by the groups themselves; they may be incomplete or later revised. Recent Breaches and GalaxyWarden are independent and are not affiliated with, and do not endorse, any company or group named on this page. This information is aggregated from public sources for awareness only and is not legal, security, or investment advice.