'A concise explanation of cost implications and system vulnerability due to the existance, replication, and mutation of computer viruses. A comprehensive appendix lists viruses known before mid-1992 with symptoms, comments and origins.' Aslib Book List, Vol. 58, No. 2, February 1993 'This is a scholarly book citing numerous literature references aimed at the management aspect of computer viruses.' Alan Solomon, The Computer Journal, Vol. 36, N0. 6, 1993