The WannaCry malware is a scary type of Trojan virus called “ransomware.” As the name sound, the virus in effect holds the infected computer hostage and demands that the victim pay a ransom in order to regain access to the files on his or her computer.
WannaCry works by encrypting data on a computer that has been infected. It then asks the user that their files have been locked and displays information on how much is to be paid and when, all the payments are taken through Bitcoin.
WannaCry ransomware could arrive as an email attachment or as a download on your computer. For your system to become infected, you’ll have to click on or downloading the attachment or file, which causes the program to run and infect your computer with ransomware.