Technological advances have made e-learning an increasingly central delivery system enhancing teaching and learning processes. Unlike face-to-face methods of teaching, which depend on physical structures, e-learning provides a potentially better alternative to face-to-face learning and makes learning easily accessible. With e-learning, education can be facilitated from virtually anywhere and at any time because of the convenience and affordability of the new technology. At the same time, however, new technology has introduced platforms that attract illegal activity. Consequently, e-learning is exposed to such threats, and security has, therefore, become one of its most pressing issues. This paper identifies and catalogs information regarding the security of e-learning systems and the protections needed to secure the users (i.e., instructors, students, and administrators) from authorized security threats.