- Cryptology 25
- Systems and Data Security 25
- Computer Communication Networks 16
- Discrete Mathematics in Computer Science 15
- Algorithm Analysis and Problem Complexity 14
- Management of Computing and Information Systems 12
- Coding and Information Theory 8
- Computers and Society 6
- Data Structures and Information Theory 4
- Software Engineering 4
- Information Systems Applications (incl. Internet) 3
- Software Engineering/Programming and Operating Systems 3
- Applications of Mathematics 2
- Computer Science, general 1
- Math Applications in Computer Science 1
- Programming Techniques 1