Hi.

I notice several submission for the virus signature database have been 
rejected recently because they're damaged or incomplete samples.

I can see that from a technical point of view a damaged or broken virus isn't 
going to do any harm (assuming it's sufficiently damaged / broken that it 
won't execute) and therefore it isn't entirely appropriate to identify it as 
a virus.

However, from a non-technical person's point of view, it doesn't do ClamAV's 
reputation much good if they see some other antivirus product identify a file 
as "Sobig.F.dam" and ClamAV doesn't identify it at all.   Such people are not 
necessarily interested in the finer details of whether the thing is actually 
dangerous or not - they just see that ClamAV didn't catch it (whatever it 
is), whereas antivirus product X did, therefore product X must be better :)

Therefore my suggestion is that a third signature database file be created, 
in addition to viruses.db and viruses.db2, and this new file contains all the 
signatures of "damaged" viruses.

That way the technical purists can leave this database off their systems, and 
know that they will detect only genuine viruses, whilst those of us who have 
to deal with more "marketing" type people (who are happy to believe things 
like "this antivirus product detects over two hundred thousand different 
viruses") can keep the third database and know that we will be detecting all 
the damaged and broken viruses that everyone else's antivirus product picks 
up.

If the idea of having an extra database file is too much of an overhead to 
implement efficiently in ClamAV, then perhaps we could simply have an 
additional file which gets distributed, but has to be appended onto the end 
of viruses.db in order for it to become effective on a system - then there 
would be no changes to the code at all, and only those people who want to 
match broken samples will need to do an additional 'cat' at the end of their 
freshclam update.

What do people think?

Antony.

-- 

Software development can be quick, high-quality, or low-cost.

The customer gets to pick any two out of three.


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