Ransomware victim disclosure

Koa Glass

Claimed by thegentlemen · listed 6 hours ago

Today

Age

since listed · data leaked

Status timeline

Listed
May 24, 2026
Data leaked

At a glance

Group: thegentlemen
Status: Data leaked
Country: JP
Sector: Manufacturing
Listed on leak site: May 24, 2026

What the group claims

koaglass.co.jp zoominfo.com/c/koa-glass-co-ltd/347978270 prestigious Japanese glass packaging manufacturer established in 1943 and headquartered in Tokyo. Specializes in high-end glass containers for cosmetics, fragrance, and pharmaceuticals, delivering end-to-end solutions: design, production, decoration, and innovative antibacterial "Million Guard" technology. With 500+ employees and facilities across Japan and China, Koa Glass serves global luxury brands including Chanel, Shiseido, L'Oreal, and Estee Lauder

Sources

Victim sitekoaglass.co.jp

Source

Indexed 6 hours 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 thegentlemen

thegentlemen is a ransomware group that emerged in September 2025, operating with apparent financial motivations based on their broad targeting of commercial sectors. The group has documented 267 victims across multiple countries, with primary focus on the United States, Thailand, France, Brazil, and India. Their targeting strategy demonstrates a preference for high-value sectors including manufacturing, technology, healthcare, and financial services organizations. Given the group's recent emergence and limited public documentation from established threat intelligence sources such as CISA, FBI, or major security research firms, specific details regarding their country of origin, operational structure, attack methodologies, encryption techniques, and whether they employ ransomware-as-a-service models remain unclear. The relatively high victim count of 267 in a short operational timeframe since September 2025 suggests either an aggressive campaign pace or potential inflation of victim numbers through affiliate operations, though without corroborating intelligence reports, the group's exact operational capabilities and notable campaigns cannot be definitively established. Current intelligence indicates the group remains active as of late 2025, though comprehensive threat profiling requires additional validated reporting from authoritative cybersecurity sources. The group has been linked to 436 public disclosures across our corpus. First observed on a leak site on September 9, 2025; most recent post May 24, 2026. The operation is currently active.

Also tracked as: the gentlemen.

Timeline of this disclosure

May 24, 2026Koa Glass listed by thegentlemenon 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, Koa Glass 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.