RE: [Declude.JunkMail] EXE files, again!

2003-01-08 Thread Bill Beach
Anyone have good links?

From http://www.sophos.com/virusinfo/whitepapers/prevention.html

Block receiving/sending of executable code
There is very little need for executable code to be received or sent. In
most instances it is also illegal, usually breaching the software copyright.
Some people are fond of using self-extracting ZIP files to send compressed
data files: for security reasons using statically compressed ZIPs (which
need PKUNZIP to be decompressed) is a much better solution.

The blocking of executable code transfer is often best achieved on the
internet gateway. Unfortunately, it is impossible to detect executable code
with 100% certainty by analysing either the file content or the file
extension. However, blocking files with executable extensions such as EXE,
VBS, SHS etc. contributes to overall anti-virus measures.

User education also plays a significant part in preventing infections by
executable code received by email: the temptation to install a cute
screensaver can be very, very high for a PC user who is not security aware.

From http://www.sophos.com/virusinfo/articles/safehex.html

Block any unwanted file types at the email gateway. Viruses often use file
types such as VBS, SHS, EXE, SCR, CHM and BAT to spread. It is unlikely that
your organisation will ever need to receive files of these types from the
outside. If this is the case Sophos recommends blocking all of them at the
email gateway - whether they are virus infected or not.

HTH

-B

---
[This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)]

---
This E-mail came from the Declude.JunkMail mailing list.  To
unsubscribe, just send an E-mail to [EMAIL PROTECTED], and
type unsubscribe Declude.JunkMail.  The archives can be found
at http://www.mail-archive.com.



Re: [Declude.JunkMail] EXE files, again!

2003-01-08 Thread Sheldon Koehler
 Anyone have good links?

 From http://www.sophos.com/virusinfo/whitepapers/prevention.html
 From http://www.sophos.com/virusinfo/articles/safehex.html


Thanks Bill. I plan on making another web page to go along with this one:
http://www.tenforward.com/support/viruspage.php


Sheldon


Sheldon Koehler, Owner/Partnerhttp://www.tenforward.com
Ten Forward Communications   360-457-9023
Nationwide access, neighborhood support!

Whenever you find yourself on the side of the majority, it's time
to pause and reflect. Mark Twain


---
[This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)]

---
This E-mail came from the Declude.JunkMail mailing list.  To
unsubscribe, just send an E-mail to [EMAIL PROTECTED], and
type unsubscribe Declude.JunkMail.  The archives can be found
at http://www.mail-archive.com.



RE: [Declude.JunkMail] EXE files, again!

2003-01-08 Thread Karen Oland
Unfortunately, failure to run AV programs at the client side (as well as at
the mail server) has crippled the legitimate sending of .EXE files through
email (which we commonly used to do -- our users are unsophisticated and
have trouble extracting updates out of their email if zipped first).  We
violate absolutely zero licenses in our distributions (licensed zip program
for creating self-extracting emails).  Instead, we have to resort to posting
the exe, sending out an email, then walking the user through the download
and execution on the phone (sure, we had to talk to them before, but AFTER
they downloaded the EXE across their crappy dial-up connection). Trying to
explain ZIP files -- forget it, you have to walk them through finding a
freeware ZIP program, installing it, possibly rebooting, then unzipping the
download and extracting it -- this is why we started using EXE files long
ago.  I guess the next step in the progress of email is we'll go back to
mailing out diskettes (which had the benefit of not having to explain that
the EXE and the unzipped files did not BOTH fit on a diskette).

Set up an area that your old lady customer can upload her cute EXE files
(or document how to use one of the free sites) and set up clear
documentation that any 50 year old can follow (not that a kid can follow) on
how to link the file in an email.  Explain the benefit of not worrying if
the receiver's mailbox is full or having to wait when sending the cute file
to all her friends for it to be uploaded once per receiver.

K Oland

 -Original Message-
 From: [EMAIL PROTECTED]
 [mailto:[EMAIL PROTECTED]]On Behalf Of Sheldon Koehler
 Sent: Wednesday, January 08, 2003 11:44 AM
 To: [EMAIL PROTECTED]
 Subject: Re: [Declude.JunkMail] EXE files, again!


  Anyone have good links?
 
  From http://www.sophos.com/virusinfo/whitepapers/prevention.html
  From http://www.sophos.com/virusinfo/articles/safehex.html


 Thanks Bill. I plan on making another web page to go along with this one:
 http://www.tenforward.com/support/viruspage.php


 Sheldon


 Sheldon Koehler, Owner/Partnerhttp://www.tenforward.com
 Ten Forward Communications   360-457-9023
 Nationwide access, neighborhood support!

 Whenever you find yourself on the side of the majority, it's time
 to pause and reflect. Mark Twain


 ---
 [This E-mail was scanned for viruses by Declude Virus
(http://www.declude.com)]

---
This E-mail came from the Declude.JunkMail mailing list.  To
unsubscribe, just send an E-mail to [EMAIL PROTECTED], and
type unsubscribe Declude.JunkMail.  The archives can be found
at http://www.mail-archive.com.

---
[This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)]

---
This E-mail came from the Declude.JunkMail mailing list.  To
unsubscribe, just send an E-mail to [EMAIL PROTECTED], and
type unsubscribe Declude.JunkMail.  The archives can be found
at http://www.mail-archive.com.



[Declude.JunkMail] EXE files, again!

2003-01-07 Thread Sheldon Koehler
I have a persitant old lady that is very upset by the fact we do not allow
EXE files. She is making greeting cards with MS Home Publisher. I showed her
this link on Microsofts site
http://office.microsoft.com/assistance/2000/Out2ksecFAQ.aspx , but she is
still adamant that it does not pertain to Home Publisher...

I tried searching Symantec and a couple other sites looking for a generic
page by a major authority that EXE files are a Bad Thing (tm). Anyone
have good links?

Sheldon


Sheldon Koehler, Owner/Partnerhttp://www.tenforward.com
Ten Forward Communications   360-457-9023
Nationwide access, neighborhood support!

Whenever you find yourself on the side of the majority, it's time
to pause and reflect. Mark Twain


---
[This E-mail was scanned for viruses by Declude Virus (http://www.declude.com)]

---
This E-mail came from the Declude.JunkMail mailing list.  To
unsubscribe, just send an E-mail to [EMAIL PROTECTED], and
type unsubscribe Declude.JunkMail.  The archives can be found
at http://www.mail-archive.com.