PT. Mitra Antar Tangguh Listed by tengu Ransomware Group: Ransomware Claim — What’s Alleged & What To Do
PT. Mitra Antar Tangguh was listed by the tengu ransomware group on February 10, 2026, after internal files were exfiltrated in a ransomware attack. An undisclosed number of people may have been affected; individuals should verify whether their information was compromised and take appropriate protective steps.
Inside the incident
The incident came to light through the group’s listing on February 10, 2026. The only confirmed element is the claim that internal files were taken. No information has been released on the date of the intrusion, the volume of data involved, or whether any files were subsequently published.
The group behind it: tengu
Tengu is a ransomware operation that maintains a leak site to list organizations it claims to have targeted. Such groups typically gain initial access through common vectors such as compromised remote-access services or stolen credentials, then move laterally to locate and copy data before deploying encryption. The listing of PT. Mitra Antar Tangguh follows the group’s established pattern of naming victims, though the accuracy of any specific claim rests on the group’s own statements.
PT. Mitra Antar Tangguh and its sector
PT. Mitra Antar Tangguh is registered in Indonesia as a Perseroan Terbatas, the standard corporate form for limited liability companies. Indonesian PT entities operate across logistics, manufacturing, distribution and service sectors and routinely maintain records that include supplier contracts, employee data, financial ledgers and operational correspondence. A compromise at any such firm therefore touches information that supports day-to-day business functions rather than consumer-facing services.
What data was at risk
The listing refers only to “internal files exfiltrated in ransomware attack.” No inventory of file types or record categories has been published. Companies of this structure commonly store employee identifiers, commercial agreements and internal communications; however, the precise contents of the exfiltrated material remain unconfirmed.
The real-world impact
Exposure of internal files can create secondary risks for individuals whose details appear in contracts or personnel records, including potential misuse for targeted fraud or social-engineering attempts. For the company, the incident may complicate relationships with partners who expect confidentiality of shared documents. At present there is no public indication of how the material, if released, has been used.
Were you affected?
Individuals who have conducted business with PT. Mitra Antar Tangguh or similar Indonesian PT entities can check whether their email address appears in known breach datasets through free exposure-scan services. If concerned, they should monitor bank and credit statements, enable multi-factor authentication on any accounts that may share credentials, and consider a credit freeze where available. Organizations should treat any contact from the company with standard verification procedures until the scope of the incident is clarified.
AICompiled with AI assistance from public sources and published under our editorial standards.
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Publicly posted by tengu — 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.