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- xThe MacMag Virus
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- The MacMag virus appeared in December, 1987. This virus is also known
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- as the “Drew,” “Brandow,” “Aldus,” and “Peace” virus. It was named
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- after the Montreal offices of MacMag magazine, from where it originated.
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- Unlike the other viruses, MacMag does not infect applications, only
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- System files. It originated as a HyperCard stack named “New Apple
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- Products.” The stack contained some exceptionally poorly digitized
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- pictures of the then new Apple scanner. When the stack was run, the virus
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- spread to the currently active System file. When other floppy disks
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- containing System files were subsequently inserted in a floppy disk drive,
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- the virus spread to the System files on the floppies.
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- Since applications are not infected by MacMag, it spreads much more
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- slowly than the other viruses (because people share System files much
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- less frequently than they share applications). Even though the virus
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- originated on a HyperCard stack, it does not spread to other stacks, only
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- to System files.
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- MacMag was programmed to wait until March 2, 1988, the anniversary
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- of the introduction of the Mac II. The first time the system was started up
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- on March 2, 1988, the virus displayed a message of peace on the screen
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- and then deleted itself from the System file.
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- Since MacMag was programmed to self-destruct, it is unlikely that your
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- software is infected with this virus. Disinfectant will nevertheless
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- recognize it and repair infected files just in case you have some very old
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- disks which might still be infected.
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- Disinfectant repairs both infected System files and infected copies of the
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- original HyperCard stack. If you try to run the repaired stack, HyperCard
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- will issue an error message.
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- There were two slightly different versions of MacMag. The differences
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- were very minor and both versions were programmed to behave
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- identically. Disinfectant properly detects and repairs both versions.
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