South Korean soldiers stand guard at a guard post near the demilitarized zone (DMZ) separating the two Koreas in Paju, South Korea, January 8, 2016. REUTERS/Kim Hong-Ji
SEOUL: South Korea's military has heightened its cybersecurity alert level, South Korea's Yonhap News Agency said, after Seoul decided to restart propaganda loudspeaker broadcasts against Pyongyang in response to North's fourth nuclear test.
Yonhap said the military had increased its cyber defence agents deployment.
