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Many sources for this field are only available in print , and may never come online . It is only through this sharing of knowledge that learning occurs among faculty , staff , and administrators interested in this field . This course focuses on computer and network security , covering a wide range of topics on both the " defensive " and " offensive " side of this field . Imagine the potential positive impact your influence and teaching could have on the health and welfare of the many families you might serve during your career in this field .