Network security would be very easy if no one ever needed to use computers or data.
From a security point of view, it is unfortunate that people use network computers.
The reality, of course, is that we need network computers and the data stored on them to do our work as educators.
IT designers consider confidentiality, integrity, and availability when they design their systems.
Confidentiality means only authorized users can access data.
Integrity means the authorized users see all the data they need and that it is complete and accurate.
Availability means they can get the data from any location and at any time they need it.
When designing IT systems, we seek to maximize security, but some things we do to make data available may threaten confidentiality.
Further, some things we do to ensure integrity may make it less available, even to authorized users.
Balancing all three is the challenge.