Skip to content
Ransomware News

Ransomware Group thegentlemen Hits: Koa Glass

Admin
HookPhish team
Target organization Koa Glass koaglass.co.jp Manufacturing

Summary

In the latest cybersecurity news, Koa Glass — a company operating in the JP — has fallen victim to a ransomware attack conducted by the group thegentlemen. This data breach, discovered on 2026-05-24T09:00:48.058406+00:00, underscores the increasing need for proactive cybersecurity defenses as we continue through 2026.

Incident Report

Attribute Information
Target Organization Koa Glass
Threat Group thegentlemen
Summary 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
Date of Breach 2026-05-24T04:01:55+00:00
Discovery Date 2026-05-24T09:00:48.058406+00:00
Region JP
Target Domain koaglass.co.jp
Business Sector Manufacturing

 

Recommended Security Actions

In response to increasing cyber threats, it’s critical to protect your organization with proactive security measures. HookPhish provides enterprise-grade solutions designed to reduce your risk of future attacks:

Protect your organization before it becomes the next headline. Explore HookPhish.

How HookPhish Helps You Stay Ahead

Don’t wait for a breach to take action — stay informed and take control of your cybersecurity posture today.

You can also check if your organization’s data has been exposed using our free Data Breach Checker.

Disclaimer

HookPhish does not engage in the exfiltration, downloading, taking, hosting, viewing, reposting, or disclosure of any stolen information. All breach data reported here is sourced from publicly available threat intelligence feeds for awareness purposes only.

Related articles

Security training designed for people.

See how HookPhish turns phishing simulation, training and threat monitoring into measurable human-risk reduction.

Book a demo Explore solutions