Computer Viruses

CONTENTSA BIT OF HISTORY3WHAT IS A COMPUTER VIRUS?4WHO WRITES COMPUTER VIRUSES?5TO WHOSE favour COMPUTER VIRUSES ARE WRITTEN?6A LEGAL NOTICE. PENAL polity OF RUSSIAN FEDERATION7SYNOPSIS8SOURCES9APPENDIX10A bit of history2 November 1988 Robert Morris younger (Robert Morris), graduate student of information science faculty of Cornwall University (USA) infected a great amount of computers, machine-accessible to Internet network. This network unites machines of university centres, private companies and governmental agents, including National aeronautics Space Administration, as well as some array scientific centres and labs.

light upwork worm has struck 6200 machines that formed 7,3% computers to network, and has shown, that UNIX not okay too. Amongst damaged were NASA, LosAlamos National Lab, exploratory centre VMS USA, atomic number 20 Technology Institute, and Wisconsin University (200 from 300 system of ruless). Spread on networks ApraNet, MilNet, Science Internet, NSF Net it practically has removed these network from building. According to Wall alley Journal, computer virus has infiltrated networks in Europe and Australia, where there were also registered events of blocking the computers.

Here are some recalls of the event participants: indication: hundreds or thousands of jobs start running on a Unix system bringing response to zero.

Systems attacked: Unix systems, 4.3BSD Unix & variants (e.g.: SUNs) any sendmail compiled with debug has this problem. This virus is spreading very quickly over the Milnet.



Within the recent 4 hours, it has hit >10 sites across the country, both Arpanet and Milnet sites. healthful over 50 sites have been hit. Most of these are major sites and gateways.

Method: Someone has written a program that uses a hole in SMTP Sendmail utility. This utility can send a message into another program.

Apparently what the attacker did was this: he or she connected to sendmail (i.e., telnet victim.machine 25), issued the appropriate debug command, and had a small C program compiled. (We have it. Big deal.)...

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