North Korea’s patterns of cyberattack could be evolving, Seoul’s police agency said Wednesday.

North Korean hackers have mainly used viruses to gain access to South Korean computers, turning individual PCs into “zombies” that could then be used to conduct distributed denial-of-service, or DDoS attacks.

But investigations in Seoul revealed North Korean hackers could increasingly be engaging in “psychological warfare” through the seizure of information on individual computers, South Korean newspaper Herald Business reported.

Source: North Korea engaging in psychological cyber warfare against South