"Rod Speed" wrote in message
...

It would be theoretically possible to hide any change if you had the
resources and opportunity. For example if you use hashes to detect
changes then someone could alter the hashes.

Not if they arent on that system they cant.

You can't be sure that what you installed wasn't compromised in the first
place.
There are even possible attacks if you compile the C source from scratch.
for example..

its possible to build a compiler that puts unwanted stuff into programs it
compiles.
It is possible to hide these from the source code of the compiler by
recognising the compiler and adding the code to do this when the compiler is
compiled.
Before you say this can't be done, did you use a binary to compile your last
program or did you do it by hand to ensure the above wasn't done?


You can reduce the risk of this happening but it will always be 0.

Nope. Its perfectly possible to have a risk of 0.

You also put a chainsaw through your computer then?