This document appears to be notes from an information security course taught by Van Hoang Nguyen in the fall of 2013. It includes definitions of information and data, discussions of objectivity and subjectivity, the relationship between information and interpretation, and challenges balancing security and usability. Key topics covered include what constitutes information, how information differs from raw data, and tradeoffs involved in system security design.

1. Van Hoang Nguyen
Mail: startnewday85@gmail.com
Department of Computer Science – FITA – HUA
Information Security Course --------------------------------------------- Fall 2013
Dept. of Computer Science – FITA – HUA

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こんにちは

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你好

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2

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你好
2
こんにちは

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What is information?
What is data?
Information vs. Data?

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你好
2
こんにちは

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Dopamine

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What is "real"?
How do you define "real"?
If you're talking about what you can feel ... what you can smell, what you can
taste and see ... then "real" is simply electrical signals interpreted by your brain.

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Objective Subjective

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Association

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Data is any sort of raw fact. Information is data in a usable form, usually
processed in some way. It’s data plus interpretation.

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“fragility of our senses”

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4
28
17
12
100 98 100 100 100 100
86
% of drivers donating organs

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Opt-in
Opt-out

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? ?

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What a piece of work is a man! how noble in reason!
how infinite in faculty! in form and moving how express
and admirable! in action how like an angle!
in apprehension how like a god!
Will Shakespeare (Act II, scene 2, of Hamlet)
the beauty of the world! the paragon of animals!

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Balancing usability & security
is always a challenge
Note: Engineering Security - Peter Gutmann (2013)

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