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Subject: 
Re: Security?
Newsgroups: 
lugnet.off-topic.geek
Date: 
Tue, 13 Mar 2001 20:00:03 GMT
Reply-To: 
cmasi@cmasi.STOPSPAMchem.tulane.edu
Viewed: 
176 times
  
"J.D. Forinash" wrote:

In article <GA53J7.n1M@lugnet.com>, Dave Schuler <orrex@excite.com> wrote:
Last week at my job I had the misfortune of attending a mandatory seminar on
Information Security, which amounted to little more than "don't leave
sensitive documents on the bus."  Through the course of it, though, the
lecturer discussed the various commonly-available software systems for
hammering through password protection, and he gave some time projections for
how long it would take to "guess" a certain type of password.
That's all well and good, but it occurred to me that my system locks me
out if I botch my password three times, so why are these intruder programs
able to make millions of attempts with no problem?  More to the point, why
does my system bother to limit me to three tries, which in practice will
only result in inconvenience to me, since the interloper can apparently make
as many attempts as it wants?

I suspect that lockouts after password retries aren't to secure the system,
they're to secure the user. Draconian measures tend to reinforce the idea
that passwords are _important_, and you should _remember_ them. [0]

Oh, and we (system administrators) like watching people squirm when they
have to come to our offices and admit they can't type their own password
given three chances. [1]

On your other subject, nobody cracks passwords by trying to log in to the
machine; they get the "password file" (which _is_ encrypted on any modern
system) and crack against that. The implication here is that not only
do security people not trust people breaking in, they don't trust people
with legitimate accounts on the system. I consider this a good thing;
the last thing I need is someone spamming the world from my account
instead of their own.

[0] Unfortunately, this last bit tends to get parsed as "write them down"

[1] Not really, but that's what the rest of the world thinks, so who are
we to argue?

-JDF
--
J.D. Forinash                                     ,-.
foxtrot@cc.gatech.edu                            ( <
The more you learn, the better your luck gets.    `-'

This statement is coming from an individual who forgets passwords that must be
changed every 30 days.[1] Aren't most passwords acquired through human
engineering anyway?

Chris

1. Now, I ask someone else to do the stuff on the system that required me to
remember the constantly changing password.



Message is in Reply To:
  Re: Security?
 
(...) I suspect that lockouts after password retries aren't to secure the system, they're to secure the user. Draconian measures tend to reinforce the idea that passwords are _important_, and you should _remember_ them. [0] Oh, and we (system (...) (24 years ago, 13-Mar-01, to lugnet.off-topic.geek)

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