NEC Subcontractor Suffers Cyber Attack Leading to Customer System Disruptions and Personal Data Leak
NEC disclosed that a subcontractor handling system development and maintenance was compromised in a cyber attack during late September 2026. Attackers stole legitimate account credentials and used them to access multiple customer environments from the subcontractor's systems. The intrusion resulted in server files being encrypted, rendering customer systems inoperable. Additional files containing personal information and system details were exfiltrated from a shared cloud storage platform used for coordination between NEC, the subcontractor, and customers. Affected customers have been notified individually, with further details on compromised personal data to be provided as they become available. The incident highlights risks associated with third-party vendor access in IT supply chains.
Security NEXTOct 20, 2026Translated from Japanese