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Virus.DOS.Alcom.257 or Alcom is a virus that runs on MS-DOS.

Behavior

Items that have this flag are generally malware such as viruses, trojans, hijackers, spyware but could also be programs that are not desirable to run on the user's computer. 

This is known to be dangerous in almost all cases.

Removing Alcom.257 manually is hard. The user never know how many files it has infected.

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