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Network security would be very easy if no one ever needed to use computers or data.

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From a security point of view, it is unfortunate that people use network computers.

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The reality, of course, is that we need network computers and the data stored on them to do our work as educators.

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IT designers consider confidentiality, integrity, and availability when they design their systems.

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Confidentiality means only authorized users can access data.

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Integrity means the authorized users see all the data they need and that it is complete and accurate.

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Availability means they can get the data from any location and at any time they need it.

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When designing IT systems, we seek to maximize security, but some things we do to make data available may threaten confidentiality.

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Further, some things we do to ensure integrity may make it less available, even to authorized users.

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Balancing all three is the challenge.