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NSU Ship Management

listed as nsuship.co.jp · Claimed by Payloadbin · listed 5 years ago

58m
Age
since listed · data leaked

Status timeline

  1. ListedSep 9, 2021
  2. Data leakeddate unknown

At a glance

Group
Payloadbin
Status
Data leaked
Country
Japan
Sector
Transportation & Logistics
Listed on leak site
Sep 9, 2021

About the victim

AI dossier — public-source company profile

NSU Ship Management (nsuship.co.jp) is a Japanese maritime company operating in the ship management sector, likely providing vessel operations, crewing, and technical management services. The company is based in Japan and operates within the broader transportation and logistics industry with a focus on maritime activities. Specific scale and operational details are not available from the provided sources.

Industry
Ship Management & Maritime Transportation

Attack summary

Severity: high — Data has been published (disclosed status: data_published) by the threat actor, indicating confirmed exfiltration and public release of company data. The maritime/ship management sector handles sensitive operational, crew, and logistics data, elevating the severity even without specific data inventory details.

The Payloadbin ransomware group claims to have attacked NSU Ship Management and has published data ('data_published' status), though no specific details about encryption, exfiltration volume, or data types were captured in the leak post.

high

Sources

Source

Indexed 5 years 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 Payloadbin

Payloadbin is a relatively obscure ransomware group that emerged in September 2021, primarily motivated by financial gain through extortion operations targeting diverse sectors across multiple countries. The group's origin and potential affiliations remain largely undocumented in public threat intelligence reporting, with limited information available regarding whether they operate as an independent entity or utilize a Ransomware-as-a-Service model. Based on observed victim patterns, Payloadbin has demonstrated a broad targeting approach without apparent sector specialization, though they have notably impacted healthcare, manufacturing, agriculture and food production, and telecommunications organizations across 48 documented cases. Their attack methodology and specific technical capabilities have not been extensively documented by major security research organizations, though their operational pattern suggests standard ransomware deployment tactics. The group has primarily targeted victims in the United States, Philippines, Australia, Mexico, and the United Kingdom, indicating either a broad opportunistic approach or potential linguistic capabilities spanning English-speaking regions and select international markets. No major high-profile campaigns, significant law enforcement disruptions, or notable ransomware payment records have been publicly attributed to this group by federal agencies or established threat intelligence firms. Current operational status remains unclear due to limited public documentation, though the group's relatively recent emergence and modest victim count suggests they may represent a smaller-scale operation compared to prominent ransomware families tracked by CISA and FBI reporting. The group has been linked to 48 public disclosures across our corpus. First observed on a leak site on September 9, 2021; most recent post March 26, 2026. The operation is currently active.

Timeline of this disclosure

  • September 9, 2021nsuship.co.jp listed by Payloadbinon the group's public leak site

Other recent disclosures by Payloadbin

Payloadbin has been linked to 48 public victims on Darkfield. A sample of the most recent:

See the full Payloadbin dossier →

Sector and geography

This disclosure adds to ransomware activity in the Transportation & Logistics sector, which has 180 disclosures indexed across all operators we track. Geographically, nsuship.co.jp is reported in Japan, a country with 220 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Payloadbin means nsuship.co.jp 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.
  • Report the incident to your national CERT, JPCERT/CC (Japan), as required for your jurisdiction.
  • Monitor for the data appearing on Payloadbin'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.