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Articles
> Trojan Attacks
By
Henderson Computers
June 2000
(updated October 2002)
How does a
trojan work? - There are two basic methods used in a trojan attack:
-
A program that
you install on your system that leads you to believe it is something
it is not. For example, you believe you are installing a graphic
veiwer, when in fact you are installing a destructive virus.
- A
parasite program is attached to the programme you are installing.
What does a
trojan do? - A trojan is a program like any other, and so it's
bounds and capabilities are limited only by the authors imagination
and the limits of technology. Generally however, they fall into these
main categories:
How can I
avoid trojans? - There are two methods of defence that we will
deal with :
-
Virus scanners
- Use a virus scanner with up to date definition files. McAfee,
Norton, Vet, etc. all make the latest definition files available from
their websites or update periodically themselves. The virus scanner
will constantly monitor your system for virus activity.
- Firewall
- A firewall detects and blocks anomylous activity on your internet
connection. The combination of virus scanner and firewall is
formidable.
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