VOA慢速英语:'Ransomware' Affects Computers Worldwide

cyber – adj. of or involving computers or computer systems

malware – n. a computer software program that is designed to damage or disable computers and computer systems

encrypt – v. to electronically change (information) from one form to another, especially to hide its meaning

ransom – n. money paid in order to free a person being held

surveillance – n. the act of watching someone or something carefully, especially in connection with law enforcement

apply – v. to use in a particular situation

online – adj. of or related to a computer or telecommunications system, such as the Internet

unlock – v. to open or undo; to free from restrictions