On 30 Dec at 11:16, Dmitry Mostovoy of 2:5020/69.4 wrote to Chris Maddock:
DM> Hi Chris!
Hi Dmitry!
CM>> Companion virus ?
CM>> The original EXE file is unchanged.
CM>> It's about the only thing that =may= get past a good integrity checker.
DM> Integrity checker and CRC checker are not the same things. The most 
DM> programs called "integrity checker" realy are only CRC checkers. Real 
DM> integrity checker _can_ detect companion viruses. For example, ADinf 
checks 
DM> not only file CRCs and lengths, but also it checks directory structure, 
DM> i.e. whether new files were created or some files were deleted or renamed 
DM> or moved to another directory, or some new directories were created or 
DM> removed. So, companion viruses can be detected with no problems.
Great and thanks for your explanation.
As I said though, it =may= get past. Any good product worth anything really 
must have companion checking, as with any decent scanner whether heuristic or 
otherwise.
A good suite of programs Dmitry. How about a short uncommercial explanation 
of basically what each one does ??
Are there any plans towards making some speed improvements ?? On a large 
drive they are somewhat slowish.
Regards,
Chris Maddock
chrism@softtech.brisnet.org.au
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