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Stoned is the name of a boot sector computer virus created in 1987. One of the very first viruses, it is thought to have been written by a university student in Wellington, New Zealand.〔("...a brief history of PC viruses." ), IBM Research〕〔("The early days" ), History of Malware〕 By 1989 it had spread widely in New Zealand and Australia, and variants became very common worldwide in the early 1990s.〔(【引用サイトリンク】 title = F-Secure Virus Descriptions : Stoned )〕 A computer infected with the original version had a one in eight probability〔("Analysis of Stoned" ), Peter Kleissner〕〔("The “Stoned” PC Virus" ), Commented disassembly of virus code at computerarcheology.com〕 that the screen would declare: ''"Your PC is now Stoned!"'', a phrase found in infected boot sectors of infected floppy disks and master boot records of infected hard disks, along with the phrase ''"Legalise Marijuana"''. Later variants produced a range of other messages. ==Original version== The original "Your computer is now stoned. Legalise Marijuana" was thought to have been written by a university student in Wellington, New Zealand.〔("...a brief history of PC viruses." ), IBM Research〕〔("The early days" ), History of Malware〕 This initial version appears to have been written by someone with experience only with IBM PC 360KB floppy drives, as it misbehaves on the IBM AT 1.2MB floppy, or on systems with more than 96 files in the root directory. On higher capacity disks, such as 1.2 MB disks, the original boot sector may overwrite a portion of the directory. On hard disks, the original master boot record is moved to cylinder 0, head 0, sector 7. On floppy disks, the original boot sector is moved to cylinder 0, head 1, sector 3. Cylinder 0, head 1, sector 3 is the last directory sector on 360 Kb disks, and the author believed that it was "safe" to overwrite. The virus will "safely" overwrite the boot sector unless the root directory has more than 96 files. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Stoned (computer virus)」の詳細全文を読む スポンサード リンク
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