- Cryptology 13
- Systems and Data Security 13
- Algorithm Analysis and Problem Complexity 11
- Management of Computing and Information Systems 7
- Computer Communication Networks 6
- Discrete Mathematics in Computer Science 6
- Coding and Information Theory 4
- Computation by Abstract Devices 2
- Computers and Society 2
- Special Purpose and Application-Based Systems 2
- e-Commerce/e-business 2
- Applications of Mathematics 1
- Computer Appl. in Administrative Data Processing 1
- Discrete Mathematics 1
- User Interfaces and Human Computer Interaction 1