A computer virus that can add fake tumours to medical scan images has been created by cyber-security researchers. In laboratory tests, the malware altered 70 images and managed to fool three ...

When you hit Ctrl-Alt-Del, instead of restarting the computer, the virus displays a picture of an angry man. If you hit another key, this message would appear: "Nothing can save you here ...

Ransomware is a particularly nasty type of computer virus. Instead of stealing data or money from victims, the virus takes control of computers and scrambles every single document, picture ...