A hypothetical computer science department povides a Hypothetical
Computer Science Instructional Facility. Students do their homework on
the HCSIF computers. Suppose a student in a beginning programming class
writes a program but fails to use the protection mechanisms to prevent
others from reading it. A second student reads the first student's
program.
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If the security policy of the HCSIF says that students are not allowed
to read homework-related files from other students, has the second
student violated security? Has the first?
-
If the first student had used the protection mechanisms to prevent
other students from reading the file, but the second student figured
out a way to read the file, would your answer to part 1 change? If so,
how?
-
If the first student told the second student to "feel free
to look at my answer, just don't copy it," would your answer to
part 1 change? If so, how?
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Department of Computer Science
University of California at Davis
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Page last modified on 1/23/97