Computer security 60 Security measures 58 Computer networks 37 Data protection 20 Access control 16 Data encryption (Computer science) 12 Computers 10 Mobile computing 9 Mobile communication systems 8 Cloud computing 6 Intrusion detection systems (Computer security) 6 Public key infrastructure (Computer security) 6 Firewalls (Computer security) 5 Machine learning 5 Passwords 5 Anomaly detection (Computer security) 4 Cryptography 4 Online social networks 4 Cell phones 3 Computer algorithms 3 Instant messaging 3 Malware (Computer software) 3 Technological innovations 3 Wireless communication systems 3 Cell phone systems 2 Computer crimes 2 Computer network protocols 2 Data mining 2 Data processing 2 Electronic information resources 2