Hello Richard,
Thank you for forwarding the message on. I appreciate any additional
information you come across.
Thanks again,
Norm Gilman
Gilman Research Services, LLC
42 W. 24th Street
New York, NY 10010
Office: 212-675-9655
Fax: 212-647-7175
Cell: 347-804-8790
ngilman(_at_)gilmanresearch(_dot_)com
-----Original Message-----
From: Richard Welty [mailto:rwelty(_at_)averillpark(_dot_)net]
Sent: Thursday, December 11, 2003 9:36 PM
To: ngilman(_at_)gilmanresearch(_dot_)com
Subject: Re: [Asrg] 2 Questions: History of "Challenge-Response" SPAM
filter and Info re. Julian Byrne
i have forwarded your note to a group of people who were there
at the time and who will i am certain have a lot to tell you about
things back then.
challenge-response techniques were being developed extensively
in the 1994-1996 time frame, and in some cases for other types
of network abuse. for example, in late 1996/early 1997 the majordomo
mailing list manager introduced "confirmation" of subscriptions, a
variant on challenge-response, in order to bring an end to the
practice of "list bombing".
there is definitely prior art back into 1996 and possibily back into
1995 or even earlier; the folks to whom i forwarded your email
have a good handle on all this history.
richard
--
Richard Welty
rwelty(_at_)averillpark(_dot_)net
Averill Park Networking 518-573-7592
Java, PHP, PostgreSQL, Unix, Linux, IP Network Engineering, Security
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