high severity February 10, 2026 · 3 min read Unverified claim — what this is

PT. Mitra Antar Tangguh Listed by Tengu Ransomware Group

If you are a customer of PT. Mitra Antar Tangguh, here’s what is being claimed, and what it would mean for you.

PT. Mitra Utama Sinergi Tangguh is a company officially registered in Indonesia in the form of a limited liability company PT – Perseroan Terbatas
— from Tengu’s own leak-site posting. This is the group’s claim, quoted verbatim; it is not GalaxyWarden’s reporting and has not been independently verified.

PT. Mitra Antar Tangguh Listed by Tengu Ransomware Group

On February 10, 2026, Indonesian company PT. Mitra Utama Sinergi Tangguh appeared on the leak site of the tengu ransomware group. The attackers claim to have stolen internal files during a ransomware incident. While the exact number of people whose information was taken remains unknown, anyone whose personal or employment records were stored in the company’s systems could be affected.

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What Public Reporting Shows

Public reporting indicates the company, formally registered in Indonesia as a limited liability entity (Perseroan Terbatas), had internal files exfiltrated. The tengu group posted evidence of the breach on its dark-web leak site on February 10, 2026. No confirmed total of records or specific data types such as names, addresses, or financial details has been publicly quantified, but ransomware incidents of this nature routinely involve employee personal information, contracts, and internal documents. Available reporting describes the victim as an Indonesian business; exact scope of the stolen data set has not been independently verified.

Why This Matters for You and Your Family

When a company that employs people or holds customer records is breached, the information can surface in places far beyond the original attack. Your name, address, phone number, or work details may be bundled with thousands of others and sold or posted online. For you and your family this can lead to unexpected spam, identity theft attempts, or targeted scams that feel personal. Children’s records linked to a parent’s employment are sometimes included, creating long-term risks that are harder to spot.

The Doxxing and Identity-Chain Risks

Stolen internal files often contain email addresses, usernames, or phone numbers that connect one account to another. Attackers and opportunistic criminals follow these links to build a full picture of your online life. A single leaked work email can expose personal accounts, social profiles, and even gaming logins. Once the chain starts, it becomes easier for someone to dox you — publishing your home address, family names, or other private details. Credential leaks like this one frequently cascade into account takeovers, especially for gaming accounts belonging to you or your children.

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What the free scan actually returns

Sample resultyou@email.comIllustrative — not a real person

Found on people-search siteswe remove these

These listings are live, public, and legal to remove — and removing them is what we do.

value redacted in this sampleage, relatives, address historySpokeo

value redacted in this samplephone, household, property recordsBeenVerified

value redacted in this sample580 companies checked

Found in breach recordsverifiedreported — unverified

Each record is labeled: confirmed breach data, or an attacker’s claim no one has verified.

verifiedvalue redacted in this samplepassword + phone · 2024telecom breach

unverifiedvalue redacted in this sampleclaimed in ransomware listing · 2026leak-site claim

Leaked data cannot be deleted from the internet — anyone claiming otherwise is lying. Broker listings can be removed. We do the second, and show you exactly what to fix from the first.

Report details & sourcing

Attributed to Tengu · 49 incidents tracked →

Severity High the filing does not enumerate what was exposed

Disclosed February 10, 2026

Last reviewed August 8, 2026

Affected Unconfirmed

By GalaxyWarden Threat Research · Editorial & sourcing standards

Unverified claim — what this report is

This page documents a public listing on a ransomware/extortion group’s leak site, tracked via public threat-intelligence sources. A listing is the attacker’s claim. GalaxyWarden aggregates and reports such claims; we have not independently verified that a breach occurred, what data (if any) was taken, or the accuracy of anything the group asserts, and the named organisation has not necessarily confirmed the incident. Sections above describe what the listing shows and the group’s documented history — not verified findings about the named organisation. If you represent this organisation and believe anything here is inaccurate, tell us and we’ll review it promptly.

Editorial & sourcing policy

GalaxyWarden is a breach-monitoring service and news aggregator. We do not exfiltrate, host, purchase, or redistribute stolen data. Breach information is compiled from publicly accessible sources and threat-intelligence platforms, and is reported as claims attributed to their source. We promptly correct or remove material shown to be inaccurate — see our content & takedown policy or write to support@galaxywarden.com.

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Tengu — 49 incidents tracked

Every breach we've attributed to Tengu, in one running log. See who else they've hit →

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