VISUAL NEWSLETTER – MAR 2002
As more and more companies implement
Internet and E-mail, virus attacks have once again increased in frequency. In
the past most viruses were introduced to companies by employees who brought
work home on diskettes. Today the most common forms of viruses travel via
E-mail attachments which when opened infect the user’s computer.
These viruses have different modes of
operation and varying degrees of hostile behaviour, but they usually exhibit
one common symptom. They access your address book and send the virus to
everyone that you have an E-mail address for. This in turn infects the
computers of your customers and personal contacts and they may point to you as
the source. This type of virus is most commonly referred to as an “Internet
Worm”
Most good Anti-Virus Programs can deal
with the majority of Viruses but you have to keep them up to date. Name brand
computers like Dell & Hewlett Packard often come with Norton Anti-Virus
installed. Unfortunately it usually only comes with a ninety day license. Up to
that point in time you can download Anti-Virus updates free of charge. After
that time, an annual subscription fee is required to keep your Anti-Virus up to
date.
As I have stated time and time again,
the best protection from Virus attacks is a good backup strategy. Most programs
can be reloaded fairly easily, but data files are hard to replace. Store important files on the server, unless you have a local
backup.
Some common sense rules to dealing with
E-mail are
worth adopting. If you receive an E-mail from someone unknown to you or your
company, you may be well advised to delete it. Even attachments from friends
with video jokes attached may be infected so proceed with caution before
opening them.
ANTI-VIRUS STRATEGIES
As noted on the previous page,
Anti-Virus software needs to be kept up to date. This is necessary because the
same people who
created the 50,000 plus computer viruses thus far are always
trying to create new ones or modify old ones to sneak them past your defences.
As new ones are identified, the Anti-Virus companies add them to their Virus
Definition Tables to help your program identify them before they can make
trouble.
For this reason, all computers on the network
ideally should have the latest version of your Anti-Virus of choice and this
should be kept up to date by downloading Anti-Virus updates at least once a
week to avoid a major outbreak. Downloading these Anti-Virus updates takes
about five minutes or less if you have a high speed connection.
Once a virus attacks, it can take many
hours and hundreds of dollars to eradicate the virus and repair the potential
damage that it can cause. Even so, it is surprising how many people neglect the
simple procedure of updating their Anti-Virus.
To get around this problem the
Anti-Virus companies have developed Corporate Versions that have a master
computer which keeps its copies up to date. This can even be done automatically
after hours if you wish. The master copy in turn keeps the other copies of the
software up to date, automatically distributing Anti-Virus updates to the other
computers as soon as they start up on the network each day.
Norton’s Anti-Virus “Corporate Edition”
is one of the programs that provide this feature.
It is best to set up the master program
on the computer of one of your more technical employees so that its updates can
be monitored. After one year you will need to subscribe to an annual update
program.