Re: ".zip" file attachments no longer blocked on CalMail

From: Mike Hunter <mhunter_at_berkeley.edu>
Date: Fri Mar 05 2004 - 11:12:01 PST

On Mar 05, "Michael Armijo" wrote:

> It is unrealistic to expect users to forego the use of email attachments
> entirely.

I agree with the sentiment, but...

> So the mantra is really "never open any attachments unless you are
> sure of (or the sender can explicitly verify) the contents,

I think that suggestion is about 95 percent effective, which unfortunately
means that it's not effective enough. The latest virus social engineering
techniques were impressive in my opinion.

> and never open an attachment that is an executable file".

I grieve for the typical user that has to determine whether a given
attachment is executable. .exe, .com, .pif, .bat, .scr all come to mind
off the top of my head, but I don't think that list is exhaustive, and I
doubt that typical users are better at it than I am. Not to mention the
fact that windows likes to hide the file extension of files, so that
you're often left with determining the file type based on a 32x32 pixel
picture!

I think the real solution is a model where users aren't put in a
position to judge the trustworthiness of any executable code.

Sing along, everybody:

Imagine there's no unapproved executables,
It's easy if you try,
No email viruses and spyware among us
Above us only sky

Mike

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Received on Fri Mar 5 11:12:43 2004

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