Full Disclosure mailing list archives

Re: AV scan on read vs write debate....


From: Reindl Harald <h.reindl () thelounge net>
Date: Mon, 30 Jun 2014 01:48:47 +0200


Am 30.06.2014 01:38, schrieb Exibar:
I see a war a-brewing in our Macintosh area, they're pushing for AV
scanning on Write only...  I'm pushing back, hard and winning so far....
They don't seem to get it no matter how much they say they understand the
dangers, they're still stuck in the world where "Mac viruses just don't
exist", and apparently they don't care if they have a Windows virus dormant
on their machines either.... they claim they have a huge performance
improvement with scan on read turned off...  It always comes back to
performance in their argument....

Does anyone have any white papers or any links or even any off the cuff
thoughts that I can bring to these folks that will help prove my point that
only having scan on write is a *very* bad idea and a huge security hole?

easy - ask them what the scan of a download helps
if it's executed later while due download there
was no matching signature

first comes the malware and then the signature to detect

if the dumb folk scan only once while store the malware
on a central fileserver that will greatly multiply damage
everytime a client opens the file with no scanning again

but if you are talk with Apple "the OS is secure" priests
forget it, they are learning resistent

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