Sawafuji Electric: internal systems breached; impact on business-partner data under investigation

Sawafuji Electric disclosed unauthorized access to internal systems on 31 October. Its 4 November second report confirms the intrusion but says external data exposure and the impact remain under investigation. No misuse of business-partner information is confirmed; counts, fields and the entry route are not disclosed. [1] [2]

It blocked the access route and isolated/preserved related systems. External forensic investigation, stronger log monitoring and identification of affected systems continue, alongside consultation with Gunma Prefectural Police’s cyber center. The notices do not establish ransomware or a specific vulnerability as the cause. [2]