Hosokawa Micron: unauthorized cloud storage login
After detecting suspicious activity on February 2 and disclosing it the next day, Hosokawa Micron traced the breach to one auxiliary cloud-storage account accessed with leaked or guessed credentials. Leaked records comprised 257 customer/business contacts, 1,470 employees or retirees and one employee family member. The family record included a My Number identifier. Operations did not stop.
Disclosed
2026-02-03
Organizations involved
1
Leaked or at risk
1.5K
1,470
Downtime
Unknown
Timeline
- Detected 2026-02-02
- Disclosed 2026-02-03
- 1 days
Attack or cause
- Method
- [Credential abuse]
- Impact
- [Data leak]
- Entry point
- Stolen credentials
Data exposed or at risk
Organizations involved
[Breached][Critical]Osaka, HirakataManufacturing
Hosokawa Micron Corporation
Sources
- [1][Official]当社がサイバー攻撃を受けた可能性のある事象について(最終報)Hosokawa Micron Corporation · 2026-03-27