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high severity August 06, 2024 · 3 min read Unverified claim — what this is

Nexus-Shinozaki Listed by sarcoma Ransomware Group

If you are a customer of Nexus-Shinozaki, here’s what is being claimed, and what it would mean for you.

General Corporation of trucks of the Prefecture of Saitama Tiba Prefecture Association (General United Association), Association of Prefecture Prefecture Warehouses (General United Association) International Association of Expeditions, etc.Geo: Japan - Leak size: 1,3 GB Archive - Contains: Files

— from Sarcoma’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.
Nexus-Shinozaki Listed by sarcoma Ransomware Group

On August 6, 2024, the Japanese trucking and logistics entity Nexus-Shinozaki appeared on the leak site operated by the sarcoma ransomware group. The listing states that internal files were exfiltrated during a ransomware attack and that a 1.3 GB archive is now publicly available. The disclosure indicates the victim operates under multiple related names including the General Corporation of Trucks of Saitama Prefecture, Tiba Prefecture Association, and the International Association of Expeditions.

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Details in the Leak-Site Listing

The sarcoma leak site entry states that Nexus-Shinozaki suffered a ransomware intrusion in which attackers copied internal files before encrypting systems. The published data package measures 1.3 GB and consists of compressed files; the listing does not specify the exact documents contained or the total number of people whose information appears inside them. No ransom demand figure or negotiation timeline is published on the page. The entry was first indexed on ransomware.live on August 06, 2024, making this the primary public disclosure.

Why This Matters for You and Your Family

When a regional logistics company’s internal files reach a ransomware leak site, the information often includes customer records, employee payroll data, vendor contracts, and scanned documents that contain names, addresses, dates of birth, and government identifiers. If your name, delivery address, or employment records appear in those files, the exposure creates immediate risks of identity theft, phishing campaigns tailored to your connection with the company, and long-term fraud. Japanese residents are not immune; in fact, localized data stolen from domestic firms frequently circulates in underground markets that target residents of the same prefecture for spear-phishing and account takeover attempts.

The Doxxing and Identity-Chain Implications

A single leaked address or phone number rarely stays isolated. Attackers combine it with usernames, email addresses, or employee IDs found in the 1.3 GB archive to build an identity chain that can reach your social-media accounts, banking profiles, and even children’s online gaming handles that reuse the same password or security questions. Once the chain is mapped, doxxing escalates quickly: public records are cross-referenced, family member names surface, and the information is packaged for sale or used in extortion campaigns. Credential leaks of this nature have repeatedly led to cascading takeovers of both adult and children’s gaming accounts because gamers often recycle the same email-password pair across work-related services and Steam, Roblox, or Discord.

Sarcoma Group’s Known Track Record

Public reporting attributes sarcoma to a relatively new ransomware operation that emerged in late 2023. The group has focused primarily on small-to-medium businesses in Asia and Europe, listing victims in manufacturing, logistics, and local government associations. Its typical playbook involves initial access through compromised remote-desktop credentials or phishing, followed by exfiltration of internal file shares before deployment of encryption. Sarcoma then waits a short period before publishing a sample archive on its leak site if the victim does not pay, applying steady pressure through incremental data releases rather than immediate full dumps. The group’s exact ties to other ransomware families remain unclear, but its leak-site infrastructure and naming conventions suggest overlap with mid-tier operators that prioritize volume over high-profile targets.

What to do

  • Run a DoxxScan to map every link between your handles, emails, phone numbers, and real-world identity, then use the cleanup of Warden to remove what you can.
  • Rotate any password you ever used at Nexus-Shinozaki or its affiliated associations anywhere it is reused, and immediately enable 2FA through an authenticator app rather than SMS.
  • Enable continuous DoxxScan monitoring across 13.1B+ breach records and 100+ platforms so the next exposure that touches you or your family is caught within hours instead of months.
  • Cover the entire household with DoxxScan family protection, which extends to dependents and children’s gaming accounts that often chain back to the same leaked addresses or credentials.
  • Let DoxxScan remediation specialists handle ongoing takedown requests for any personal records that surface from this or linked data-broker exposures.

The sarcoma listing of Nexus-Shinozaki on August 6, 2024, is a concrete reminder that even mid-sized regional companies hold data that can expose ordinary families to prolonged identity risk. One short DoxxScan trial gives you both immediate visibility into your exposure footprint and access to specialists who actively work to shrink it. Start your DoxxScan trial today and treat this claimed breach as the last time your family’s information drifts in the open.

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 sample582 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.

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Report details & sourcing

Severity High the filing does not enumerate what was exposed
Disclosed August 06, 2024
Last reviewed August 8, 2026
Affected Unconfirmed
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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