Computer security 89 Security measures 77 Computer networks 50 Data protection 23 Access control 20 Data encryption (Computer science) 15 Dissertations, Academic 15 Dissertations 14 Computers 13 Mobile computing 10 Intrusion detection systems (Computer security) 9 Mobile communication systems 8 Cloud computing 7 Cryptography 7 Public key infrastructure (Computer security) 7 Anomaly detection (Computer security) 6 Information technology 6 Firewalls (Computer security) 5 Internet 5 Machine learning 5 Passwords 5 Computer crimes 4 Data processing 4 Malware (Computer software) 4 Online social networks 4 Cell phones 3 Computer algorithms 3 Computer hackers 3 Computer network protocols 3 Image processing 3