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Virus Protection
Mike "exterminator" Moya
Mac viruses can affect us all. They are becoming more and more a
problem as an increasing number of Mac II's (with an internal
hard drive (disk)) and external hard drives are being used within
our Macintosh network.
The hard drives (internal and external) are becoming a virus
breeding ground. The drive becomes infected from a user who
unknowingly uses an infected floppy on a Macintosh machine with a
hard drive. "What comes around goes around" is now most
certainly true. With the hard disk infected, the next innocent
user to insert a *clean* floppy for use in that machine comes
away with a contaminated floppy!
This is an endless circle UNLESS *you*, the user, take several
precautions before using a Macintosh workstation. Most important,
assume nothing! Before using a Mac machine with a
internal/external drive check it out with a virus detector (read
Virus Killing). Every time! It only takes a few minutes and is
well worth the time spent.
Make periodic checks of your own floppy(ies) with a virus
detector, and when I say periodic, I mean every couple of days
for those floppies you use frequently. This whole virus mess can
be controlled by you, the user, with just a little bit of
prevention. Here are a few tips to keep yourself virus free.
Laws to live (compute) by...
- Check out *all* new software before using it, and I
mean all! Commercial, shareware, or freeware...assume
nothing; suspect all. I wouldn't even trust a brand new
software package right out of a reputable store, it wouldn't
be the first time a virus has been shipped through commercial
software.
- Knowing your floppies are clean is not enough. Verify
that your workspace is clean also. Check out any hard disk
(internal or external) drive attached to a Macintosh
workstation *before* you use it (see how in my Virus Killer
article).
- Keep all original software on LOCKED floppies. Use
only copies, never unlock the original disk. It is impossible
for a virus to infect a locked floppy (read "The Terminator").
Check your copies often for infections.
- Make periodic backups. Check for viruses immediately
before backing up software. In addition, check your "backed
up" material intermittently.
Suspect a Virus if...
- an application hangs or bombs (system error)
immediately when trying to run it. A virus may have attacked
your floppy! You should immediately clean it.
- the system or finder application inside your system
folder is very large. Chances are it is infected.
- you have problems printing or booting from a floppy.
An inoculation may be necessary.
- the Macintosh becomes very slow or sluggish for no
reason. Chances are an unwelcomed critter is sharing your
equipment. Eradication measures should be taken.
Another valuable deterrent for the war against these beasts is
word of mouth. Tell your friends, lab partners and other Mac
users to read these articles on viruses and take preventive
measures! For more information on applications available to you
to find, fix and prevent viruses on your floppies and hard disk
drives *please* read my article on Virus Killing "The
Terminator".
webmaster@ecn.purdue.edu
Last modified: Thursday, 30-Oct-97 17:01:17 EST
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