Ransomware hits Japan’s IDCF Cloud, cutting 495 companies and governments from their data

On October 7, 2026, ransomware hit IDCF Cloud, the infrastructure of SoftBank subsidiary IDC Frontier, causing a regional outage that cut 495 companies and local governments off from their data. The attacker claims 3.6 PB encrypted and 16,000 VM disks sealed — a reminder that your cloud provider is a single point of failure.