How to Foil Cyberbullies

By JENNIFER SUMMERVILLE and JOHN C. FISCHETTI

For three weeks during the fall 2004 semester, we were harassed and threatened by a student taking online courses. He sent many hostile e-mail messages, like "If I find out that you have in any way compromised my ability to get my certificate, I will come after you."

One of us, Jennifer Summerville, was the professor of the course;...