How do you do business if, as you say, you ca't open Word or Excel files due
to macro viruses?
There are certainly some people who are in business situations where
they have no choice but to open such attachments. Those people need to
run the risk. But *many* people do *not* have to do so, and every time
they do, they run a needless risk.
We can scan for viruses you know!
This is a very common attitude--"I run a virus checker and I keep it
up-to-date; therefore I am safe from viruses."
Common as that attitude is, it is wrong! Running an anti-virus program
is good to do. It substantially decreases the risk of your getting a
virus. It does not, and *can* not eliminate that risk.
First, note that every anti-virus program on the market protects
against a slightly different set of viruses. All of those sets overlap
to a large degree, but nowhere is there complete overlap. None is
perfect and none protects you against everything. If you run antivirus
A, you are not protected against virus xyx. If you run antivirus B,
you are protected against xyz, but you not protected against zyx. And
so on.
Second, even if every antivirus program provided complete protection
against every virus out there, and even if you upgraded your
anti-virus definitions every day, as soon as the new ones came out,
you could still never be completely protected. That's because all
antivirus companies need to have time to respond to a new virus when
it comes out. Whenever a new virus comes out, one or more people have
to get infected by it, it has to get reported to the antivirus
company, and they need time to research and develop countermeasures
against it. Best case, it takes a few days. During that few days, we
are *all* at risk to getting infected by that virus.
So using an antivirus is good, but relying on it as absolute
protection is foolhardy. Caution and prudence in everything you do
(call it "safe hex," if you like) are still appropriate. Avoiding
opening E-mail attachments is one of the ways to that--at least for
those not required by their jobs to open them.