Disclosure context

About Knight

Knight is a relatively new ransomware group that emerged in September 2023, operating with primarily financial motivations and demonstrating a focus on targeting critical infrastructure and high-value sectors. The group's origin and specific affiliations remain largely undocumented in public threat intelligence reports, though their operational patterns suggest they operate as an independent entity rather than a established ransomware-as-a-service model. With 48 known victims since their emergence, Knight has shown a preference for targeting organizations across the United States, Brazil, Italy, Spain, and Germany, with particular focus on healthcare, manufacturing, media, and government sectors. Their attack methodology and specific technical capabilities have not been extensively documented by major security firms, though their targeting of healthcare and government entities suggests they employ effective initial access techniques and likely utilize double extortion tactics common among contemporary ransomware groups. While specific notable campaigns have not been widely publicized by CISA, FBI, or major security researchers, the group's consistent activity across multiple countries and high-value sectors indicates sustained operational capability. Knight appears to remain active as of current reporting, though detailed technical analysis and specific law enforcement actions against the group have not been publicly documented by authoritative sources. The group has been linked to 48 public disclosures across our corpus. First observed on a leak site on September 6, 2023; most recent post February 12, 2024. The operation is currently inactive.

Timeline of this disclosure

December 13, 2023DAIHO INDUSTRIAL Co.,Ltd. listed by Knighton the group's public leak site

Data size: 1.64 MB

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, DAIHO INDUSTRIAL Co.,Ltd. is reported in Japan, a country with 108 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

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DAIHO INDUSTRIAL Co.,Ltd.

Claimed by Knight · listed 2 years ago

1.64 MB

Data size

29m

Age

since listed · data leaked

Status timeline

Listed
Dec 13, 2023
Data leaked

At a glance

Group: Knight
Status: Data leaked
Country: Japan
Sector: Manufacturing
Listed on leak site: Dec 13, 2023
Data size: 1.64 MB

About the victim

AI dossier — public-source company profile

DAIHO INDUSTRIAL Co., Ltd. is a Japanese plastics processing manufacturer founded in 1937 and part of the Daiho Group. The company manufactures and sells a wide range of plastic processed products serving major industries including home electronics, automotive, office automation equipment, and housing goods. It has established a top-tier reputation in Japan's plastics processing sector over nearly 80 years of operation.

Industry: Plastics Processing & Manufacturing
Founded: 1937

Attack summary

Severity: critical — Confirmed exfiltration of regulated PII at individual level (passport scans of named persons), combined with broad corporate data across finance, HR, IT, and operations, plus backup encryption. Publication of personal identity documents elevates this to critical.

The Knight ransomware group claims to have exfiltrated a broad range of sensitive corporate data — including accounting, finance, IT, audit, QA, and HR files, as well as files from all employee workstations including the president's desktop — and also encrypted/locked all backups. The group has published proof files including passport scans of named individuals, network diagrams, server room images, CCTV screenshots, and internal business documents.

critical

Data the group says was taken

AI dossier — extracted from the leak post

Passport scans (named individuals)
Accounting and financial records
IT inventory and infrastructure data
Audit documents
QA/quality control records
HR records
Annual business plan (2023)
Network diagrams
Server room photographs
CCTV footage/screenshots
Backup system data
Workstation files (including president's desktop)
Database records

The group's post references roughly 14 proof files.

What the group claims

Since its foundation in 1937, the Daiho Group has enjoyed a top-rank reputation in the plastics processing industry in Japan. They have been manufacturing and selling various plastic processed products meeting the needs of companies representing Japan for nearly 80 years. The company's products are used for home electronics, automobiles , office automation equipments, housing goods etc. which are indispensable for our daily lives. Daiho has now made a progress to support various key industries in Japan. Unfortunately, they failed to support their cyber security infrastructure... We have access to all accounting, finances, IT, audits, QA, HR and a  lot of sensitive data. We also have access to all files from all workstations, including the president's desktop. We also locked all your backups. UPDATE : We're not playing. Get in contact with us ASAP or we leak everything. Here's more files leaked as proof : kataoka_passport.png 894.65 KBMr.Kataoka.JPG 599.8 KBpachern_passport.png 1.64 MBnetwork.png 243.96 KBserver_room.jpg 260.28 KBcctv.png 800.58 KBbackups.png 104.31 KB----------------------------------------------------------------------------------------------------------------------------annual_plan_2023.png 126.46 KBaruba.png 117.12 KBDB.png 234.73 KBIT_inventory.png 251.43 KBRoH.png 581.6 KBQAC.png 218.38 KB10098.jpg 51.49 KB8113.jpg 46.69 KB

Sources

Leak posthttp://knight3xppu263m7g4ag3xlit2qxpryjwueobh7vjdc3zrscqlfu3pqd.onion/8a4937db-f14b-4f01-b3d1-82cd2b32dbd2/

Source

Indexed 2 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.