Cybersecurity incident — 2015-10-05 00:00:00
Affected organization: Seoul Subway System
Affected country: Korea (the Republic of)
Industry: Transportation and Warehousing
Event type: Exploitive
Event subtype: Exploitation of Application Server,Exploitation of End Hosts
Motive: Undetermined
Actor: NGB 3rd Technical Surveillance Bureau
Actor type: Nation-State
Actor country: Korea (the Democratic People's Republic of)

A threat actor compromised networks associated with Seoul's subway system.