HIPPA password protected zip files

Julian Field MailScanner at ecs.soton.ac.uk
Tue Oct 25 21:58:32 IST 2005

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Glenn Steen wrote:

>To add some clarification (or confusion, depending on how you look at
>it:), some AVs might have signatures for specific files, even though
>they don't really decode the files.... But, the main benefit of saying
>"No" to password protected archives is that this is a "proactive
>defense" s where the AV programs mainly are "reactive defenses"....
>The AV signature makers need see the malicious code to be able to make
>signatures for them (yeah, I'm aware of the "new" buzz about heuristic
>scans and sandboxing... won't come into play with a pwd protected
>archive), while saying no will deny any threat posed by allowing it...
>But if you need allow, then yes, do make a ruleset and keep the
>allowed set small (and "numeric";).
As most of you probably realise, I am very strongly in favour of 
pro-active protection. It's one of the main differences between 
MailScanner and most of the competition, multiple layers of pro-active 
defence, meaning that it doesn't matter if your AV signatures are a 
little behind while the AV vendors work out their new detection patterns.

- -- 
Julian Field
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