EC>> well.  A virus can be a trojan, but it is not usual since Trojans are
EC>> a lot harder to code.
KW>you have a very strange idea of what trojans are... trojans are simple
KW>programs and are not very hard to write at all, they are most certainly
I would say they are even easier to write than any virus since you
don't need routines for attaching the trojan to a host and therefore
you don't even need a replication routine. And since (as you mentioned)
a shell script can satisfy the definition of a trojan you don't even
need knowledge of the assembly language.
KW>not viruses (trojans do not self-replicate) and the only reason they're
KW>harder to catch is that there are so many simple trojans that one can
KW>possibly make... an install.bat with a simple single line command could
KW>be made that would be a trojan...
I'd say it's more because trojans aren't that widespread (due to the
lack of beeing able to reproduce). They'd typically only show up on
a view systems.
Also (imho) trojans are more a problem of the Unix world (and since
most people use MS ...). I mean what could a trojan possible do
to a MS system  (that is if you were able to upload it afterall) ?
Formatting your C: ? Big deal ... very satisfyieng indeed. But under
Unix there are the real possibilities :
- re-routing mail
- locking out root
- leaving backdoors to the system
- stealing data out of /home
- ok, crashing the system is possible as well ;)
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