Koa Glass
About the organisation
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
What the listing means
Koa Glass appeared on the thegentlemen leak site on 24 May 2026. Groups publish a victim once negotiations stall or as pressure during them, so a listing usually means data was already exfiltrated. This group has published 134 claims in the last 30 days and remains active.
Recommended actions
- Treat any unsolicited message referencing Koa Glass as suspicious — leaked data gets weaponised for phishing within days.
- If you hold an account on koaglass.co.jp, change that password now, update it anywhere you reused it, and enable two-factor authentication.
- Other Manufacturing organisations should review this group's known TTPs and validate detection coverage against them.
- Watch for follow-on extortion: stolen data is often re-leaked or resold after the initial listing.
- A leak-site listing is a claim made by the attacker, not a confirmed breach — check the organisation's own disclosures before acting on it.
Leak-site evidence
Listing URL https://www.ransomware.live/id/S29hIEdsYXNzQHRoZWdlbnRsZW1lbg==