- Cryptology 37
- Systems and Data Security 26
- Computer Communication Networks 22
- Management of Computing and Information Systems 12
- Coding and Information Theory 11
- Algorithm Analysis and Problem Complexity 8
- Software Engineering/Programming and Operating Systems 8
- Discrete Mathematics in Computer Science 6
- Information Systems Applications (incl. Internet) 6
- Computers and Society 5
- Data Structures and Information Theory 5
- Information Systems and Communication Service 4
- Security Services 4
- Computer System Implementation 3
- Special Purpose and Application-Based Systems 3
- Artificial Intelligence 2
- Computer Hardware 2
- Mobile and Network Security 2
- Software Engineering 2
- Theory of Computation 2