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Date: Mon, 18 Aug 2008 10:25:11 -0400
From: Theodore Tso <tytso@mit.edu>
To: tvrtko.ursulin@sophos.com
Cc: david@lang.hm, davecb@sun.com, Adrian Bunk <bunk@kernel.org>,
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Subject: Re: [malware-list] scanner interface proposal was: [TALPA] Intro
	to a linux interface for on access scanning
Message-ID: <20080818142511.GC8184@mit.edu>
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On Mon, Aug 18, 2008 at 02:15:24PM +0100, tvrtko.ursulin@sophos.com wrote:
> Then there is still a question of who allows some binary to declare itself 
> exempt. If that decision was a mistake, or it gets compromised security 
> will be off. A very powerful mechanism which must not be easily 
> accessible.  With a good cache your worries go away even without a scheme 
> like this.

I have one word for you --- bittorrent.  If you are downloading a very
large torrent (say approximately a gigabyte), and it contains many
pdf's that are say a few megabytes a piece, and things are coming in
tribbles, having either a indexing scanner or an AV scanner wake up
and rescan the file from scratch each time a tiny piece of the pdf
comes in is going to eat your machine alive....

						- Ted
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