DisclosureLens
GLOBALtranslated → enUnknownRansomwareGunraLow

Tomoku Co., Ltd.

bd_390b7820b35c8975 · schema v1 · pii pii-v1

Severity

Low

Discovered

—

Filed

May 3, 2025

To disclose

—

Affected

Not disclosed

Linked

2 filings

Confidence

60%
Full breach record for Tomoku Co., Ltd. →

Press / market disclosure — not a breach-notification filing

A media or market posting that confirms an incident but carries no breach-notification fields, so compliance clocks aren't assessable. The summary below is extracted from the coverage and machine-translated to English — verify against the source.

Summary

machine-translated

Notice regarding system disruption caused by unauthorized access. Tomoku Co., Ltd.: On May 3, 2025, Tomoku Co., Ltd. suffered a ransomware attack that encrypted some of its servers, causing a failure of its online ordering system. Despite this disruption, orders via the web, fax, and email, as well as the company's website and email systems, are functioning normally, allowing production to continue. The company is currently collaborating with external experts and the police to investigate the incident and restore its systems. Linked ransomware group: gunra.

Incident timeline — mostly unverified

? — ?

Breach window unknown

May 3, 2025

Press report

—

Corroborated · see linked filings

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

Attack → press

—

Compliance clock

Not assessable

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Ransomware claims (1)

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market reportThis record

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filing

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source ceiling

  • incident type + narrative only (may be machine-translated)
  • discovery date
  • materiality
  • affected count
  • data types
  • compliance clock

The ✕ fields stay blank until a regulatory filing or victim disclosure lands.

About this groupFirst seen 2025-04-07

gunra

According to ransomware.live, Gunra is a financially motivated ransomware group that emerged in April 2025, using double-extortion tactics against real estate, pharmaceuticals, and manufacturing sectors across Japan, Egypt, Panama, Italy, and Argentina, deploying separate Windows and Linux variants with a strict five-day payment deadline.

54 victims claimed globally54 tracked hereFull profile →