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1997-12-15 - Re: hashcash spam prevention & GSM/SMS

Header Data

From: Mike <Michael.Johnson@mejl.com>
To: Adam Back <cypherpunks@cyberpass.net
Message Hash: 2dd692fea4181bedebfc37eef3f30bf36c6be51cf0654501621c2d2232a30397
Message ID: <3.0.3.32.19971215122019.00923e40@localhost>
Reply To: <199712130059.AAA06343@server.eternity.org>
UTC Datetime: 1997-12-15 11:25:46 UTC
Raw Date: Mon, 15 Dec 1997 19:25:46 +0800

Raw message

From: Mike <Michael.Johnson@mejl.com>
Date: Mon, 15 Dec 1997 19:25:46 +0800
To: Adam Back <cypherpunks@cyberpass.net
Subject: Re: hashcash spam prevention & GSM/SMS
In-Reply-To: <199712130059.AAA06343@server.eternity.org>
Message-ID: <3.0.3.32.19971215122019.00923e40@localhost>
MIME-Version: 1.0
Content-Type: text/plain



Adam Back wrote:
>I am looking at writing some hashcash
>(http://www.dcs.ex.ac.uk/~aba/hashcash/) based spam prevention
>software.  The motivation for writing spam prevention software is that
>spam is better combatted with technical methods than legal or
>political

Would this work for GSM phones as well? I believe that GSM-spam is becoming
a wide spread problem. In Finland the GSM phone numbers are published in
online databases where spammers get the numbers and they use free
Internet-to-GSM/SMS message services.

Using hashcash on the smartcard in a GSM phone would be really neat!


Mike.

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