ÚÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄ¿ ³ VIRUS REPORT ³ ³ Christmas Card ³ ÀÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÙ Date of Origin: December, 1987. Host Machine: IBM E-mail system. This virus circulated a Christmas greeting throughout IBM's worldwide E-mail system in December, 1987. The virus overloaded the network, forcing IBM to shut it down temporarily. The virus was sent by a West German law student to friends through a local European academic research network. The virus told the receiver's computer to display the greeting, then quietly send the virus and message to everyone on the recipient's regular electronic mailing list. It turned out that someone on the list had special, restricted access to IBM's E-mail network of several thousand computers in 145 countries. IBM has since modified their system to make repetition improbable. ÉÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍ» º This document was adapted from the book "Computer Viruses", º º which is copyright and distributed by the National Computer º º Security Association. It contains information compiled from º º many sources. To the best of our knowledge, all information º º presented here is accurate. º º º º Please send any updates or corrections to the NCSA, Suite 309, º º 4401-A Connecticut Ave NW, Washington, DC 20008. Or call our BBS º º and upload the information: (202) 364-1304. Or call us voice at º º (202) 364-8252. This version was produced May 22, 1990. º º º º The NCSA is a non-profit organization dedicated to improving º º computer security. Membership in the association is just $45 per º º year. Copies of the book "Computer Viruses", which provides º º detailed information on over 145 viruses, can be obtained from º º the NCSA. Member price: $44; non-member price: $55. º º º º The document is copyright (c) 1990 NCSA. º º º º This document may be distributed in any format, providing º º this message is not removed or altered. º ÈÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍÍͼ  Downloaded From P-80 International Information Systems 304-744-2253