As of Friday this year, there have been 65 cases this year, reports Yonhap news agency. Ransomware attacks have been aimed at various businesses. Last month, food delivery company Super Hero's operations were paralyzed for hours after a ransomware attack, impacting 15,000 delivery workers nationwide. �� Cyber Attacks Surge in South Korea, Country Under Mega Ransomware Attacks in COVID-19 Pandemic-Driven Online Era.