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4K (computer virus)
4k is a computer virus which infects COM files and EXE files. The virus was one of the first to employ stealth tactics. Infected systems will hang, after September 22 every year, which is also the date of birth Bilbo Baggins, a character from ''The Lord of the Rings''. The code was intended to display the message ''Frodo Lives'', but hangs in all known variants.
This virus was spread without the aid of the Internet. It was ported between systems by floppy disks.
==History==
It first appeared in October 1989. The first U.S. specimen was contracted in Dallas, TX, and quarantined with verification given by antivirus professionals. Reporters and TV crews recorded this in the local area news in August 1990. Its trail led from Dallas back to New York via a professional at a software firm creating software for lawyers. Virus firms had been tracking it previously in London a month or two before getting calls from New York. No specimens were quarantined or properly recorded in New York.
Raymond Glath of Phoenix, AZ, was the developer and owner of the Vi-Spy product which continued production until mid-release of Windows 95. Reports to McAfee antivirus and Vi-Spy antivirus firms resulted in only one product properly detecting the virus, Vi-Spy.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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