Panasonic Employee Data Breach: 330,000 Staff Records Leaked to Unauthorized AI Service

A Panasonic employee breached company security protocols by uploading personal information for approximately 334,000 people—including current staff, former employees, and their family members—to an external generative AI service prohibited under company policy. The incident was disclosed on October 23, 2026, and reported to Japanese authorities on September 29, following discovery during an HR system implementation project.