Copyright protects material only when it is written down or recorded.

However, others claimed that no matter the content, the exam was protected academic material.

Copyright protects material so that other people are not allowed to reproduce it without permission.

The technology to try to protect such copyrighted material is called digital rights management.

Fire rings, however, do not fully protect material on the ground from catching fire.

In the last year, each armed service has installed new programs to detect hackers and to protect sensitive material.

This is partly because there are elaborate federal rules for protecting sensitive material from disclosure.

Where the institution protects the individual, the industry protects raw material.

These attacks made clear that more needed to be done to protect nuclear material and installations from theft or a terrorist attack.

And even in cases when sources talk on the record, or for publication, a line should be drawn protecting unpublished material, journalists argue.