The Wayback Machine - https://web.archive.org/web/20070218125016/http://www.all.net:80/books/virus/index.html
Fred Cohen &Associates;
Specializing in Information Protection Since 1977
Technical Safeguards
Computer Viruses - Theory and Experiments
Copyright(c), 1984, Fred Cohen
This paper defines a major computer security problem called a
virus. The virus is interesting because of its ability to attach itself
to other programs and cause them to become viruses as well.
