Individuals, governments and organizations now routinely connect their computers to the Internet to communicate, provide services, and access massive stores of shared information. These on-line activities, many conducted beyond national boundaries, have opened up enormous opportunities for security attacks such as identity thefts, computer hackings, privacy breaches, technical sabotages, etc. Addressing security threats and attacks in this vast and complex distributed environment is an immensely challenging task. The Computer Security pathway is centred round a core Security theme that introduces students to fundamental security topics that arise in the design, analysis, and implementation of networked and distributed systems. Subsidiary themes allow students to investigate broader areas in which they may apply their newly acquired skills. The pathway is designed for students who wish to specialize in the security aspect of the Information Technology field.