KIM Dental Listed by thegentlemen Ransomware Group: Ransomware Claim — What’s Alleged & What To Do
KIM Dental was listed by thegentlemen ransomware group on November 24, 2025, after internal files were exfiltrated in a ransomware attack affecting an undisclosed number of people. Individuals who may have received services from KIM Dental should review any notices from the organisation and consider protective steps such as monitoring accounts and updating passwords.
Inside the incident
The only confirmed detail is the listing itself. The group posted the name of the Vietnamese dental network together with the assertion that files had been taken. No date of intrusion, volume of data, or encryption status has been disclosed in public reporting. The scale of the operation and the method used to gain access remain unknown.
The group behind it: thegentlemen
Thegentlemen is a ransomware operation that follows the common pattern of encrypting victim systems and removing copies of data. When payment demands are not met, the group publishes victim names and sample material on a dedicated leak site. The listing of KIM Dental constitutes the group’s claim of involvement; independent confirmation of the data’s authenticity or the circumstances of its removal has not been made public.
Who is KIM Dental?
KIM Dental operates the largest dental clinic network in Vietnam, with branches in Ho Chi Minh City, Hanoi, Dong Nai, Tien Giang, and Vung Tau. The organization provides general and specialized dental services across multiple facilities and maintains patient records that include appointment histories, treatment notes, and administrative documentation typical of a multi-site healthcare provider.
The information in question
The listing refers only to “internal files.” The precise categories of data have not been published. Dental networks routinely hold patient identifiers, contact details, medical histories, billing information, and internal operational records. Whether any of these categories are present in the exfiltrated material is unconfirmed.
What's at stake
Individuals whose records appear in the files face the possibility that personal and health information could be further distributed. For the organization, the incident adds operational disruption and potential regulatory scrutiny under Vietnam’s data-protection requirements. Both outcomes depend on the actual contents of the files, which have not been verified.
If your data was in this claimed breach
Monitor statements from KIM Dental for any official notification. Change passwords for any accounts linked to the clinic and enable multi-factor authentication where available. Individuals can run a free exposure scan of their email address against known breach data to check whether their information has appeared in other incidents.
AICompiled with AI assistance from public sources and published under our editorial standards.
How this breach connects
More recent breaches
Das Labor Listed by thegentlemen Ransomware GroupSanta Casa de Assis Listed by thegentlemen Ransomware GroupAiHealth Listed by thegentlemen Ransomware GroupPacific Holdings Group JSC. Listed by thegentlemen Ransomware GroupLatest breaches
Read GalaxyWarden’s full analysis of the KIM Dental Listed by thegentlemen Ransomware Group →
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.