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Roger Clarke's 'Message Transmission Security Risks'

Message Transmission Security Risks

Version of 11 May 1998

Roger Clarke

© Xamax Consultancy Pty Ltd, 1996, 1997, 1998

This document was prepared as a breakout box to support the documents called 'Crypto-Confusion' and 'Data Transmission Security'. It provides an outline of the risks involved in the transmission of a message from one person or organisation to another.

This document is at http://www.rogerclarke.com/II/CryptoSecy.html


When a message is sent from one person or organisation to another, over a communications link, the following risks exist:

(1) Non-Receipt of a message by the intended recipient

  1. This may be:

(2) Access by an unintended person or organisation

This may be to:

Its cause may be:

(3) Change to the contents while in transit

The cause may be:

(4) Receipt of a false message

By this is meant a message that purports to come from a particular sender, but which that person or organisation did not in fact send. The cause may be:

(5) Wrongful denial

This may be an act by:



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The content and infrastructure for these community service pages are provided by Roger Clarke through his consultancy company, Xamax.

From the site's beginnings in August 1994 until February 2009, the infrastructure was provided by the Australian National University. During that time, the site accumulated close to 30 million hits. It passed 50 million in early 2015.

Sponsored by Bunhybee Grasslands, the extended Clarke Family, Knights of the Spatchcock and their drummer
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Created: 11 February 1996 - Last Amended: 11 May 1998 by Roger Clarke - Site Last Verified: 15 February 2009
This document is at www.rogerclarke.com/II/CryptoSecyRisks.html
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