Full Disclosure mailing list archives

RE: Is the FBI using email Web bugs?


From: "Poof" <gui () goddessmoon org>
Date: Wed, 7 Jan 2004 21:22:54 -0500

Actually- the problem with that is that fine... it won't allow any ports
except for the needed 25/110/143... Then what's to stop an image from using
http://www.spamsite.com:25/110/phonehome.jpg?emailaddress(or whatever)

... Nothing!

Nice try though... Best protection is through your email client. O2K3 does
it native ^^

~

-----Original Message-----
From: full-disclosure-admin () lists netsys com [mailto:full-disclosure-
admin () lists netsys com] On Behalf Of Ben Nelson
Sent: Wednesday, January 07, 2004 7:34 PM
To: Gregh
Cc: full-disclosure () lists netsys com
Subject: Re: [Full-disclosure] Is the FBI using email Web bugs?

Gregh wrote:
wont listen. In Zone Alarm you can tell it to DISALLOW Outlook Express
(or
whatever you like) access to different ports. So, I tell it to disallow
access to or from port 80 by OE. Thus, a received HTML email with pics
and
such in it just shows blanks, "x" or placeholders, really. Now, while
saying
this, if you decided to use some other port to report back on, sure, you
would get around this but the majority of spam operators who spam you
don't
require JUST the "click to remove" to be clicked to verify you DO exist
thus
send more spam and sell the address to another spammer. They also have
port
80 and if the email is clicked on by a typical OE setup, just to delete,
it
"phones home". For those described earlier in this paragraph, ZA
blocking OE
in/out on port 80 stops most of the phone home stuff.

Couldn't you just block all port access from OE *EXCEPT* those that are
needed? (probably 25, 110, 143)

--Ben

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