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TEAM GROUP

Claimed by Medusa · listed 11 months ago

2.25 TB
Data size
1028 Employees records
10m
Age
since listed · data leaked

Status timeline

  1. ListedSep 3, 2025
  2. Data leakeddate unknown

At a glance

Group
Medusa
Status
Data leaked
Country
Thailand
Listed on leak site
Sep 3, 2025
Data size
2.25 TB
Records
1028 Employees

About the victim

AI dossier — public-source company profile

TEAM GROUP is a Taiwanese-founded technology company with operations including in Thailand that designs and manufactures memory modules, NAND flash storage products, and related consumer and industrial hardware. The company sells products globally under the TEAMGROUP brand across retail and OEM channels. It is a mid-sized hardware manufacturer known for DRAM modules, SSDs, and USB flash drives.

Industry
Computer Hardware & Memory Products Manufacturing
Employees
501-1000
Founded
1997

Attack summary

Severity: high — 2.25 TB of confirmed exfiltrated and published data from a mid-sized hardware manufacturer represents significant business data exposure at scale; while exact content is unknown, the volume and published status elevate this beyond medium severity.

Medusa claims to have exfiltrated approximately 2.25 TB of data from TEAM GROUP and has published the data following non-payment of ransom. The nature of the exfiltrated content is unspecified in the truncated post, but the disclosed status indicates data has been released.

high

Data the group says was taken

AI dossier — extracted from the leak post
  • Corporate files
  • Internal documents
  • Potentially employee PII
  • Potentially financial records
  • Operational/business data

What the group claims

TEAM GROUP is one of the leading integrated consulting firms in Thailand and region with more than 40 years of experience in comprehensive consulting services in the areas of Building and Infrastructure, Water Resources, Environmental Management, Transport and Logistics, as well as Power and Energy. TEAM GROUP has accomplished more than 2,500 projects in Thailand and overseas including the Xayaburi Hydroelectric Power Project, Suvarnabhumi Airport, Government Complex, and MRT Blue Line Extension. company is headquartered in TEAM Building, 151 Nuan Chan Road, Nuan Chan, Bueng Kum, Bangkok 10230 Thailand 1028 Employees. The total amount of data leakage is 2.25 TB

The leak post

captured from the group's site
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Sources

Source

Indexed 11 months ago

This page surfaces a public ransomware disclosure indexed by Darkfield. Original posts come from the operator's own leak site; we cross-check against ransomware.live, RansomLook and RansomWatch where applicable. Share this URL freely.

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Disclosure context

About Medusa

Medusa, also known as MedusaLocker, is a financially motivated ransomware group that emerged in November 2022 and has since compromised 568 known victims across multiple countries. The group's origin and specific affiliations remain unclear from publicly available intelligence, though their operational patterns suggest they function as an independent ransomware operation rather than a documented Ransomware-as-a-Service model. Medusa primarily targets organizations in the United States, United Kingdom, Canada, Italy, and Australia, with a focus on business services, healthcare, manufacturing, and technology sectors, employing typical ransomware tactics including data encryption and likely exfiltration for double extortion purposes, though specific technical methodologies and initial access vectors have not been extensively documented in public threat intelligence reports. While the group has maintained a relatively high victim count since its emergence, detailed information about specific notable campaigns, high-profile victims, or major ransom demands has not been widely reported by major cybersecurity firms or law enforcement agencies. As of current intelligence assessments, Medusa appears to remain active in the threat landscape, continuing to target organizations across their established geographic and sectoral preferences. The group has been linked to 635 public disclosures across our corpus. First observed on a leak site on November 15, 2022; most recent post May 5, 2026. The operation is currently active.

Also tracked as: MedusaLocker, MEDUSA LOCKER.

Timeline of this disclosure

  • September 3, 2025TEAM GROUP listed by Medusaon the group's public leak site
Data size
2.25 TB
Records
1028 Employees

Other recent disclosures by Medusa

Medusa has been linked to 635 public victims on Darkfield. A sample of the most recent:

See the full Medusa dossier →

Sector and geography

Geographically, TEAM GROUP is reported in Thailand, a country with 63 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Medusa means TEAM GROUP appeared on a ransomware extortion site and data attributed to it has been published. If this is your organisation, or a supplier you depend on, the priority is to confirm the intrusion and contain it before the window to act closes.

  • Engage your incident-response team and preserve forensic evidence before remediating — do not wipe affected systems first.
  • Force a password reset and revoke active sessions for exposed accounts; rotate any credentials, API keys or certificates that may have been in the stolen data.
  • Assess regulatory notification duties (GDPR, NIS2, sector regulators) — many carry a 72-hour reporting clock from awareness.
  • Monitor for the data appearing on Medusa's leak site and across paste and breach channels, and brief downstream partners who may be exposed through you.

How we know this. Darkfield monitors public ransomware leak sites continuously, archiving every new disclosure and the data later released against the victim. Each entry on this page is sourced from the operator's own publication and cross-checked against complementary OSINT feeds (RansomLook, ransomware.live, RansomWatch). We do not collect or host stolen data — only the metadata, timestamps and screenshots needed to make the public disclosure searchable and accountable. Records here are corrected when the original post is edited, retracted, or merged with another disclosure.