Ransom! Yaomasa (AUG-2026)
AiLock ransomware targeted Yaomasa, a Japanese supermarket chain founded in 1919 that also operates TSUTAYA and BOOKOFF franchise stores, encrypting or disrupting its IT environment to extort payment. The incident affected services in #Japan

Incident Details

  • Victim: Yaomasa
  • Sector: Not Found
  • Country: JP
  • Actor: AiLock
  • Source:
  • Discovered: 2026-08-13T11:50:07.862992+00:00
  • Published: 2026-08-13T11:50:06.295990+00:00

Information

  • Yaomasa is a Japanese supermarket chain founded in 1919.
  • It offers fresh foods, general groceries, and daily necessities.
  • It also operates TSUTAYA and BOOKOFF franchise stores through its cultural division.

Disclaimer: This post is based on public claims made by the ransomware group "AiLock". I cannot confirm the accuracy of the information. However, I would be happy to share any official statement from the affected organization to provide clarification.

monitored by: ransomware.live