Computer networks Computer security Security measures 39 Access control 7 Computers 5 Data protection 5 Passwords 4 Computer network protocols 3 Firewalls (Computer security) 3 Intrusion detection systems (Computer security) 3 Data encryption (Computer science) 2 Electronic mail messages 2 Information technology 2 Instant messaging 2 Internet 2 Anomaly detection (Computer security) 1 Application program interfaces (Computer software) 1 Application software 1 Automatic control 1 Ciphers 1 Cloud computing 1 Coding theory 1 Computer algorithms 1 Computer crimes 1 Computer viruses 1 Cyberterrorism 1 Development 1 Dislocation 1 Enterprise application integration (Computer systems) 1 Evaluation 1