Great Circle Associates Firewalls
(June 1996)
 

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Subject: Re[2]: Firewalls-Digest V5 #317
From: "Jim Meritt" <jmeritt @ smtpinet . aspensys . com>
Date: Mon, 24 Jun 96 09:54:26 EST
To: Firewalls @ GreatCircle . COM, Steven Bellovin <smb @ research . att . com>
Cc: shawn @ aob . org

     
Question: What are the legal implications of a private individual reading 
someone else's email?  Or diverting it?  How about an individual designated by a
corporation?

Jim Meritt

______________________________ Reply Separator _________________________________
Subject: Re: Firewalls-Digest V5 #317 
Author:  Steven Bellovin <smb @
 research .
 att .
 com> at SMTPINET
Date:    5/15/96 11:22 PM


  Does anyone know how the wiretap laws affect 'net traffic?  (I assume
  they could get a warrant to tap someone's communications and I also
  assume that some ISPs may retain the right to tap their clients traffic
  if they suspect a problem.)
  
  Does it matter if the connection was instigated with a telephone line?
  (i.e: conforming to whatever traditional wiretap laws or whatever.)

Bill Cheswick and I devoted much of a chapter to these questions in our
firewall book.  The U.S. Federal statutes are online; see

 http://www.law.cornell.edu/uscode/18/ch119.html
 http://www.law.cornell.edu/uscode/18/ch121.html

for the text.

Briefly, though, the ECPA extended wiretap law to cover computer
communications under many circumstances.  The presence or absence of
a phone line is irrelevant.  The provisions for a warrant do apply.
Internal corporate communications may or may not be covered; the law
mostly applies to external services.  Communications companies may
use wiretaps to protect their own assets, but they're not allowed
to engage in random monitoring of content.

State law may add additional restrictions, and non-U.S. law may be
completely different.

  --Steve Bellovin



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