City of Koka security incident history
Hacking, data breaches and other security incidents involving City of Koka, with related coverage.
Incidents: 1 · Most recent
Ransomware hits Koka’s voice broadcast system in Japan
25kImpact: Voice broadcast system outage; possible leak of around 25,000 records, including personal information
A ransomware attack on the voice broadcast system server in Koka, Shiga Prefecture, Japan, shut down the emergency information voice broadcast system. Outdoor loudspeakers and other equipment became unavailable, and around 25,000 records, including personal information, may have been leaked. As of 12 November, there was no estimate for restoration.
Related reports: 5 · last report →