AV Vendors | Map © Computer Knowledge 2000 Virus Intro Virus Types Virus History Virus Protection Virus Hoaxes Current Threats Computer Knowledge Virus Tutorial Welcome to the … … Knowledge tutorial on computer viruses. We’ll discuss what they are, give you some history, discuss protection from viruses, and mention some of the characteristics of a virus hoax. Keep in mind that not everything that goes wrong with a computer is caused by a computer virus or worm. Both hardware and software failure is still a leading cause …

© Computer Knowledge 2000 Virus Intro Virus Types Virus History Virus Protection Virus Hoaxes Current Threats Computer Knowledge Virus Tutorial | home Virus History Narrative histories by Dr. Alan Solomon and Robert M. Slade are available. Below is an expanded summary. 1981 - The First Virus In The Wild As described in Robert Slade’s history , the first virus in the wild actually predated the experimental work that defined current-day viruses. It was spread on Apple II floppy disks (which contained the operating system) and spread from Texas A&M. 1983 - The First Documented Experimental Virus Fred Cohen’s seminal paper Computer Viruses - Theory and Experiments from 1984 defines a computer virus and describes the experiments he and others performed to prove that the concept of a computer virus was viable. From the paper… On November 3, 1983, the first virus was conceived of as an experiment to be presented at a weekly seminar on computer security. The concept was first introduced in this seminar by the author, and the name ‘virus’ was thought of by Len Adleman. After 8 hours of expert work on a heavily loaded VAX 11/750 system running Unix, the first virus was completed and ready for demonstration. Within a week, permission was obtained to perform experiments, and 5 experiments were performed. On November 10, the virus was demonstrated to the security seminar. 1986 - Brain & PC-Write Trojan The common story is that two brothers from Pakistan analyzed the boot sector of a floppy disk and developed a method of infecting it with a virus dubbed “Brain” (the origin is generally accepted but not absolutely). Because it spread widely on the popular MS-DOS PC system this is typically called the first computer virus; even though it was predated by Cohen’s experiments and the Apple II virus. That same year the first PC-based Trojan was released in the form of the popular shareware program PC-Write

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