Compromise of the Seoul subway system
Date of report
  • October 2015
  • Believed to be the work of the same actors behind Dark Seoul and possibly linked to Onion Dog
A threat actor compromised networks associated with Seoul's subway system.
Suspected victims
  • Seoul Subway System
Suspected state sponsor
  • Korea (Democratic People's Republic of)
Type of incident
  • Espionage
Target category
  • Government
Victim government reaction
  • Yes
Policy response
Suspected state sponsor response