PR Firms and their Mission Looking at how public relations practitioners advertise their services, they do not primarily seem to be followers of the "social engineering" approach. Burson-Marsteller, the worlds leading PR agency, for example sells itself as a specialist in "... public affairs, government relations, crisis communication, investor relations, environmental issues and marketing communications ... experienced at orchestrating effective campaigns, which motivate the right behaviors.". Porter Novelli, third largest international PR company, somewhat more aggressive promises, that their marketing-based public relations "... penetrate the consumer psyche - where - your target audiences work, learn, play or shop, through everything they read, hear and see.". While Porter Novelli seems to be specialized in psychological warfare, Fleishman-Hillard highlights its know-how and experience in government relations programs. "We have handled some of the nation's most challenging public policy issues, including issues affecting the environment, from clean air to agricultural chemicals; aviation safety; regressive taxes; international trade; and human rights.". To handle those difficult tasks, Fleishman-Hillard maintains "... an effective, professional lobbying team that includes registered lobbyists recruited from the Senate and the House."

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Internet Content Providers Perspective As within the traditional media landscape, Internet content providers have two primary means of generating revenue: Direct sales or subscriptions, and advertising. Especially as charging Internet users for access to content - with all the free material available - has proven problematic, advertising is seen as the best solution for creating revenues in the short term. Therefore intense competition has started among Internet content providers and access services to attract advertising money. Table: Web-Sites Seeking Advertising Period Number of Web-Sites June 1999 2111 July 1999 2174 August 1999 2311 September 1999 2560 Source: Adknowledge eAnalytics. Online Advertising Report

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David Kahn David Kahn can be considered one of the most important historians on cryptography. His book The Codebreakers. The comprehensive history of secret Communication from Ancient Times to the Internet, written in 1996 is supposed to be the most important work on the history of cryptography.

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cryptoanalysis the study of breaking others' codes to transform a message back into a legible form without knowing the key from the beginning

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codes an algorithm for bringing a legible message into an illegible form. There has to exist some sort of code book to encode/decode it.

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ciphertext the enciphered/encoded and primarily illegible text

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to encipher/encode to put a word or text into ciphers/codes

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ciphers the word "cipher" comes from the Hebrew word "saphar", meaning "to number". Ciphers are mere substitutions. Each letter of the alphabet gets substituted; maybe by one letter or two or more. an example: PLAINTEXT a b c d e f g h i j k l m n o p q r s t u v w x y z CIPHERTEXT D E F G H I J K L M N O P Q R S T U V W X Y Z A B C

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