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Potential problems with electronic messa... > The order could have been intercepte... - Pg. 805

What is needed here is a way to ensure that the client is who he says he is. In some cases, this way must involve a sort of shared secret, such as a password, which is called user authentication . "Authentication" on page 811 explains how this is done. The order could have been intercepted and read Figure A-2 shows a hacker intercepting and reading an order that the client has placed. Garth (Client) Hi Rama, I am Garth. Purchase 100 shares of GoodBank Corporation for me please. Rama (Broker) Hacker I see...Garth is buying 100 shares of GoodBank Corporation.