This exploratory study found that approximately 10 to 15 percent of students reported receiving repeated e-mail or Instant Messenger (I-M) messages that "threatened, insulted, or harassed," and more than half of the students received unwanted pornography. Approximately 7 percent of students reported online harassment to an authority. Messages originated from strangers, acquaintances, and significant others. No difference in online harassment was found based on demographic variables except sexual orientation. Sexual minority students were more likely to receive online harassment from strangers than were heterosexual students. Implications for further research and for policy/program development were discussed to address these new social problems associated with online participation. The study cautions that due to limitations cited, results should be viewed tentatively, and recommends that additional research is needed to fully examine the issue. The authors indicate that because these cyber behaviors could lead to anxiety and health problems that interfere with a positive campus experience, colleges should make an assessment of the extent of these behaviors at their respective institutions and institute both prevention and intervention efforts if needed. Data were collected from 339 undergraduate students at the University of New Hampshire using a survey. Tables, references