Stolen data on nearly two thousand Mitsubishi employees
Date of report
  • January 2020
The China-linked Bronze Butler threat actor is suspected to have used a zero-day in Trend Micro antivirus to attack Mitsubishi Electric and steal data on thousands of employees. In May 2020, it was disclosed that the breach resulted in the theft of specifications for a hypersonic missile that Japan had been developing to protect disputed territory in the East China Sea.
Suspected victims
  • Mitsubishi Electric employees
Suspected state sponsor
  • China
Type of incident
  • Espionage
Target category
  • Private sector