According to Elisan ([[Malware, rootkits and botnets#Chapter 2 a brief history of malware]]), the term was coined by [[Yisrael Radai]] in 1990. Before that, they were collectively called [[virus|computer viruses]] computer viruses. Malware is defined as [[software]] or code that will have an unauthorised, unfavourable [[impact]] on the victim's [[confidentiality]], [[availability]], or [[integrity]] - essentially attacking one or more of the [[CIA triad]]. They come in many varieties: [[virus]], [[Trojan horse]], [[worm]], [[spyware]], [[keylogger]], [[ransomware]]. You might also define it as "a set of instructions that cause a site's security policy to be violated" ([[CYM070 week 02#What is malware ?]], Ahmad Salman Khan) Malware now comes as a [[service]]! [[ENISA]], the cybersecurity agency of the [[EU]], reports the detection of 230,000 new strains of malware every day (according to [[A corrupting influence]]) In [[Thinking Security (Stopping Next Year's Hackers)|Bellovin, Ch. 2]], Bellovin says there are two kinds of [[software]]: malware and targets ## Classes of malware - [[virus#File infectors|infectors]] - [[worm|worms]] - [[Trojan horse]] - backdoor - remote access [[Trojan horse]] - information stealers - [[ransomware]] - mobile malware