14 companies report 'WannaCry' damage in S. Korea
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Employees watch an electronic board to monitor possible ransomware cyberattacks at the Korea Internet and Security Agency in Seoul, Monday. / Yonhap
South Korea's state-run cybersecurity agency said Wednesday that 14 companies have been struck by the crippling ransomware "WannaCry" so far, which has been emerging as one of the biggest threats to global cybersecurity.
Ransomware refers to malware that locks up files on a computer with encryption until the victims pay a certain amount of money to hackers. The latest instance of ransomware, called "WannaCry," first surfaced last week, damaging some 200,000 computers in 150 countries around the globe.
The Korea Internet & Security Agency (KISA) said it has received 5,012 calls inquiring into ransomware through its hotline so far.
Industry watchers said the number of computers struck by WannaCry is estimated to be higher considering individuals and companies that have not filed reports.
The KISA said users should continue updating their Windows to the latest versions to prevent potential attacks.