Rob wrote:
Yes. That is how it always is. You can never get total protection
from a system like this.
Even with a system that queries an online server, you have the
problem that you may visit a site that is not yet known to serve
malware, so the server says "OK" and you get infected anyway.
It is the same with virus scanners. That is why it is always better
to setup the system in such a way that software cannot be installed
or run as downloaded by the logged-in user. Use a separate account
for surfing and for administering the system (installing software).
Antivirus publishers nowadays try to defeat the malware writers by
incorporating heuristic algorithms that are supposed to recognize
patterns even if the malware doesn't precisely match a known specimen.
The downside of that, as we've seen here, is a certain percentage of
false positives -- legitimate programs that are flagged because they
kinda sorta look like malware.
--
War doesn't determine who's right, just who's left.
--
Paul B. Gallagher
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