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Yano Electronics Ltd. (株式会社 矢野製作所)

listed as yano.tokyo · Claimed by Blackout · listed 10 days ago

10d
Age
since listed · data leaked

Status timeline

  1. ListedJul 19, 2026
  2. Data leakeddate unknown

At a glance

Group
Blackout
Status
Data leaked
Country
Japan
Sector
Technology
Listed on leak site
Jul 19, 2026

About the victim

AI dossier — public-source company profile

Yano Electronics Ltd. is a Tokyo-based precision manufacturing company specializing in press-formed mechanical components, mold design, and assembly services. They serve diverse sectors including medical devices, automotive, audio equipment, and optical equipment, with R&D headquarters in Tokyo and production facilities in Thailand (Prachuap Khiri Khan province).

Industry
Precision Metal Stamping & Mechanical Components Manufacturing
Address
5-21-14 Nishi-shin-koiwa, Katsushika-ku, Tokyo 124-0025, Japan

Attack summary

Severity: medium — Data has been published by the threat actor (disclosed status confirms publication), but the truncated leak post provides insufficient detail on data type, volume, or sensitivity. No specific regulated/PII data is explicitly confirmed. Manufacturing companies typically hold moderately sensitive IP and client lists.

Blackout group claims to have compromised Yano Electronics Ltd. in the microelectronics sector. The truncated leak post provides limited detail on the specific attack vector or data exfiltration claims.

medium

Data the group says was taken

AI dossier — extracted from the leak post
  • Business operations data
  • Company records

What the group claims

Yano Electronics Ltd. is a company in the field of microelectronics, we p...

Sources

Source

Indexed 10 days 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 Blackout

Blackout is a recently emerged ransomware group that began operations in February 2024, with their primary motivation appearing to be financial gain through extortion activities. The group has demonstrated relatively limited scope with nine documented victims to date, but has shown geographic diversity in their targeting across Greece, France, Germany, Canada, and Croatia. Their sector preferences indicate a focus on business services, healthcare, manufacturing, and transportation/logistics industries, suggesting they may target organizations with critical operational dependencies that increase pressure for ransom payment. Due to the group's recent emergence and limited public documentation from major security firms and government agencies, details regarding their specific attack methodologies, initial access vectors, encryption techniques, and operational structure remain largely undocumented in open-source intelligence reporting. No major high-profile campaigns or significant law enforcement actions have been publicly reported in connection with this group's activities. Given the February 2024 first observation date and the relatively small victim count, Blackout appears to be a newly active but minor player in the ransomware landscape, though their current operational status and potential growth trajectory remain subjects for continued monitoring by threat intelligence analysts. The group has been linked to 12 public disclosures across our corpus. First observed on a leak site on February 26, 2024; most recent post July 19, 2026. The operation is currently inactive.

Timeline of this disclosure

  • July 19, 2026yano.tokyo listed by Blackouton the group's public leak site

Other recent disclosures by Blackout

Blackout has been linked to 12 public victims on Darkfield. A sample of the most recent:

See the full Blackout dossier →

Sector and geography

This disclosure adds to ransomware activity in the Technology sector, which has 3,563 disclosures indexed across all operators we track. Geographically, yano.tokyo is reported in Japan, a country with 89 ransomware disclosures in our corpus.

If your organisation is affected

A listing by Blackout means yano.tokyo 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 Blackout'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.