Disclosure context

About qilin

Qilin is a ransomware group that emerged in October 2022, operating with primarily financial motivations through targeted attacks against organizations across multiple sectors. The group appears to operate independently with limited public information available regarding their specific country of origin or affiliations to other ransomware families. Qilin employs double extortion tactics, typically exfiltrating sensitive data before deploying their encryption payload, though specific details about their initial access vectors and technical tools remain less documented in public security research. The group has demonstrated a broad targeting approach, with their 1645 known victims spanning multiple countries including the United States, France, Canada, United Kingdom, and Germany, with particular focus on manufacturing, technology, healthcare, and business services sectors. Based on available intelligence reporting, Qilin remains an active threat as of recent assessments, continuing their ransomware operations without significant reported law enforcement disruption. The group has been linked to 1,857 public disclosures across our corpus. First observed on a leak site on October 8, 2022; most recent post May 20, 2026. The operation is currently active.

Timeline of this disclosure

April 27, 2026TokyoHosoKogyo Corporation listed by qilinon the group's public leak site

Sector and geography

This disclosure adds to ransomware activity in the Manufacturing sector, which has 2,458 disclosures indexed across all operators we track. Geographically, TokyoHosoKogyo Corporation is reported in JP, a country with 88 ransomware disclosures in our corpus.

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.

Ransomware victim disclosure

← All victims

東京鋪装工業株式会社 (Tokyo Hoso Kogyo Corporation)

listed as TokyoHosoKogyo Corporation · Claimed by qilin · listed 23 days ago

23d

Age

since listed · data leaked

Status timeline

Listed
Apr 27, 2026
Data leaked

At a glance

Group: qilin
Status: Data leaked
Country: JP
Sector: Manufacturing
Listed on leak site: Apr 27, 2026

About the victim

AI dossier — public-source company profile

Tokyo Hoso Kogyo Corporation (東京鋪装工業株式会社) is a Japanese civil engineering and construction company headquartered in Chiyoda-ku, Tokyo, specialising in road paving construction and paving material products. The company operates both a construction business and a products business, with in-house production technology including ICT-assisted grading and proprietary semi-flexible pavement systems. They are also engaged in low-carbon pavement material development in collaboration with external partners.

Industry: Road Paving & Construction Materials
Address: 〒101-0021 東京都千代田区外神田2-4-4 第一電波ビル5階 (Daiichi Denpa Building 5F, 2-4-4 Sotokanda, Chiyoda-ku, Tokyo 101-0021, Japan)

Attack summary

Severity: high — The victim's own website confirms a ransomware attack, and the disclosed status is 'data_published', indicating actual data exfiltration and release by the Qilin group. Although the specific data types are not enumerated in the available evidence, confirmed data publication by a known ransomware operator warrants a high severity rating.

The Qilin ransomware group claims responsibility for an attack on Tokyo Hoso Kogyo Corporation, with the company itself publicly acknowledging ransomware-related damage in a notice dated 2026-05-12. The disclosed status indicates data has been published, though the group's leak post provides no further detail on the nature or volume of exfiltrated data.

high

Data the group says was taken

AI dossier — extracted from the leak post

Corporate business data (nature unspecified)

What the group claims

N/A

The leak post

captured from the group's site

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Sources

Source

Indexed 23 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.