YOKOSUKA GAKUIN Ransomware Attack
yokosuka-gakuin.ac.jp
Overview
View group profileDomain
yokosuka-gakuin.ac.jp
Industry
Education
Country
Japan
Discovered
7 months ago
Attack date
Dec 15, 2025
Confidence
100%
Severity
Medium
Status
Unknown
Threat group
rhysidaTotal victims
65
First seen
Jul 2025
Last seen
Jun 2026
Group status
active
Sophistication
0
Impact score
113
Threat level
3.3/10Aggressiveness5/10
Lethality0/10
Criticality5/10
Status breakdown
Claimed24.6%16
Victim's position within group
Industry
Education
Known target sector
Country
Japan
Frequently targeted country
Other victims
View all (65)Same group · rhysida
Group activity