Computer security Computer networks 18 Security measures 10 Coding theory 9 Data encryption (Computer science) 9 Data protection 5 Computer crimes 3 Computer networks--Security measures 3 Computer science 3 Electronic data processing departments--Security measures 2 Privacy, Right of 2 Certification 1 Computer crimes--Investigation 1 Computer memory 1 Computer networks -Security measures 1 Computers 1 Computers - acess control 1 Cryptography 1 Data encryption(Computer Science) 1 Data representation 1 Electronic data processing departments 1 Electronic data processing personnel 1 Examinations 1 Information security 1 Input-output devices 1 Internet--Security measures 1 Linux 1 Multimedia 1 Network security 1