The only exception to the below being that if you are acting "as an
agent of law enforcement" (i.e. the police put you up to it), there are
no current LEGAL ramifications for doing it.

However, you NEED to notify all individuals via that logon banner that
their activities may be monitored in a variety of ways with or without
their consent.

Just my opinion...

Jeremy
MCSE, MCT, MCIWA, CIWCI, CCNA, A+, Net+, I-Net+
------------------------------------------------------------------------
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Technical Trainer
New Horizons of <Your Wildest Dreams> :)
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-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] 
Sent: Monday, March 18, 2002 2:55 PM
To: [EMAIL PROTECTED]; [EMAIL PROTECTED]
Cc: [EMAIL PROTECTED]
Subject: RE: A question about logon banners (long)


Just a thought here from my days in physical security.  As a private
individual, you are not governed by the fourth amendment rights of
another, as those restrictions only extend to government agents and
their search and seizure activities.  The private individual keylogging
another private individual arena is just waiting for a huge press story
to get it into court and get it decided.  From what I can find, you can
be sued civilly for doing it, as you can for doing just about anything
anymore, but there are no legal restrictions in place against you, as
far as I am aware, unless you break another existing criminal statute or
code.  I could be wrong, so as always, consult your available legal
eagles prior to any actions.



Jeff Neithercutt  CNA, GSEC
Wells Fargo Bank
Corporate Information Protection
155 5th Street  MAC 0186-030
San Francisco, CA.  94103
(415)243-5549


-----Original Message-----
From: Charley Hamilton [mailto:[EMAIL PROTECTED]]
Sent: Thursday, March 14, 2002 2:12 PM
To: John Stauffacher
Cc: Security Basics Mailing List
Subject: Re: A question about logon banners (long)


John -

Googling "logon banner legal requirement" got me:

        http://rr.sans.org/incident/evidence.php

which explicitly discusses many of the issues regarding 
legality of monitoring, but does not *directly* mention
logon banners.  However, it has pointers to several legal
cases or statutes which relate to monitoring in general.

That got me:

        http://www.cert.org/advisories/CA-1992-19.html

which includes the text:

"...
The legality of such monitoring is governed by 18 U.S.C. section 2510 et
seq. 
[This looks like the first place to start hunting.]  That statute was
last 
amended in 1986, years before the words "virus" and "worm" became part
of our 
everyday vocabulary. Therefore, not surprisingly, the statute does not
directly 
address the propriety of keystroke monitoring by system administrators. 

Attorneys for the Department [of Justice] have engaged in a review of
the statute 
and its legislative history. We believe  his believe that such keystroke
monitoring 
of intruders may be defensible under the statute. However, the statute 
does not expressly authorize such monitoring. Moreover, no court has yet

had an opportunity to rule on this issue. If the courts were to decide 
that such monitoring is improper, it would potentially give rise to both

criminal and civil liability for system administrators. Therefore,
absent 
clear guidance from the courts, we believe it is advisable for system 
administrators who will be engaged in such monitoring to give notice to 
those who would be subject to monitoring that, by using the system, they

are expressly consenting to such monitoring. Since it is important that 
unauthorized intruders be given notice, some form of banner notice at
the 
time of signing on to the system is required. Simply providing written
notice 
in advance to only authorized users will not be sufficient to place
outside 
hackers on notice. 
..."


The site has the following revision state:
        Original issue date: December 7, 1992
        Last revised: September 19, 1997

18 USC 2510 et seq was amended 01/02/01 according to 
http://uscode.house.gov/usc.html

Similarly, 

        http://www.ciac.org/ciac/bulletins/j-043.shtml

has text for such a banner used by the DoE.  If such a law existed, then
assuredly DoE would explicitly state in the 
banner its meeting the requirements of XX U.S.C. section YYY et seq. It
doesn't.

You might also try 

http://www.usdoj.gov/criminal/cybercrime/usamarch2001_4.htm

(also from google) which has a link to something called "Searching and 
Seizing Computers and Obtaining Electronic Evidence in Criminal 
Investigations", which I bet has the reference you want.  It is hosted
at http://wwww.cybercrime.gov. [I never knew this existed.  Hey, I
learned something new today.  
I can go home!]

Looks to me like there is (or was) *not* an explicit legal 
"logon banner" paragraph, but that the logon banner *seems* to 
meet the requirements for notification of and consent to monitoring 
in the absence of a written acknowledgement (such as when a cracker
takes a shot at your network).  The entire purpose (at least, 
as I understand it) of such logon banners is to provide explicit notice
to unauthorized users of the monitoring and explicitly state that 
use of the system constitutes consent to this monitoring.  Authorized 
users must typically acknowledge and consent to this monitoring as 
part of their user agreement.  I believe this stems from the 
requirements on wire tapping (etc) in 18 U.S.C. 2510 that requires 
consent of all monitored parties, in the absence of a court order, 
for such monitoring to be used as evidence.  I am *not* sure how 
this otherwise interacts with personal and commerical privacy law. 18
USC 25XX is pretty dense with requirements.

However, IANAL and all the rest of the disclaimers.  My recommendation 
is that you get your dept head to talk to one of the university's 
lawyers and have *them* hunt down the right title and section, if you 
feel the need to know.  That's what lawyers are paid for.  The 
university would probably happily pay their lawyer to do that rather 
than to fight a privacy law suit or lose a suit against some cracker who
trashed an online record system (like accounting). 

Just my 0.02 and a little (the most dangerous kind!) 
Google knowledge.

Charley

-- 
Charles Hamilton, MS EIT                Doctoral Candidate
Department of Civil and                 Phone: 949.824.8694
    Environmental Engineering           FAX:   949.824.2117 
University of California, Irvine        Email: [EMAIL PROTECTED]

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