Virus-90 Virus

 Virus Name:  Virus-90 
 V Status:    Research 
 Discovered:  December, 1989 
 Symptoms:    .COM growth; TSR 
 Origin:      District of Columbia, United States 
 Eff Length:  857 bytes 
 Type Code:   PRC - Parasitic Resident .COM Infector 
 Detection Method:  ViruScan, F-Prot, AVTK, Sweep, IBMAV, ChAV, 
                    NAV, NAVDX, VAlert, PCScan, 
                    NShld, LProt, Sweep/N, Innoc, NProt, AVTK/N, 
                    NAV/N, IBMAV/N 
 Removal Instructions:  F-Prot, or delete infected files 
 General Comments: 
       The Virus-90 virus was originally distributed in December, 1989 by 
       Patrick Toulme as an "educational tool", with the virus source also 
       available for sale.  In January, 1990, the author contacted the 
       sites where he had uploaded the virus requesting that they remove 
       it from their systems, his having decided a live virus was not a 
       "good idea" for an educational tool after being contacted by 
       several viral authorities. 
       The following description was submitted by Patrick Toulme in 
       November 1990 for inclusion in this listing: 
        "This educational, research virus was written by Patrick Toulme to 
       aid developers in understanding direct-virus action and in creating 
       virus-resistant software.  This virus is a simple COM infector that 
       will not infect a hard drive and advises the user when a file on a 
       floppy disk is to be infected.  Of course, no damage occurs from 
       the virus and all infected files advise the user of the infection 
       upon execution.  The safeguards provided by the author prevent 
       accidental infection and the disassembly of the code is extremely 
       difficult.  Upon request from the anti-viral community, Virus-90 is 
       now only available to approved anti-virus researchers." 
       See:   Virus-101 

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