Computer security Security measures Computer networks 42 Access control 10 Data protection 8 Computers 7 Data encryption (Computer science) 5 Dissertations 5 Dissertations, Academic 5 Internet 5 Information technology 4 Passwords 4 Computer network protocols 3 Firewalls (Computer security) 3 Intrusion detection systems (Computer security) 3 Mobile computing 3 Auditing 2 Civil service 2 Cloud computing 2 Computer crimes 2 Computer hackers 2 Electronic data processing departments 2 Electronic mail messages 2 Image processing 2 Instant messaging 2 Local area networks (Computer networks) 2 Mathematical models 2 Administrative agencies 1 Anomaly detection (Computer security) 1 Application program interfaces (Computer software) 1