Computer security Security measures 138 Computer networks 97 Data protection 52 Computer crimes 31 Cryptography 21 Computers 20 Information technology 20 Prevention 17 Access control 15 Management 15 Data processing 14 Business enterprises 13 Cyberterrorism 12 Data encryption (Computer science) 12 Electronic commerce 10 Investigation 9 Reliability 9 Cloud computing 8 Computer software 8 Privacy, Right of 8 Business 7 Electronic data processing departments 7 Internet 7 Cyberspace 6 Development 6 National security 6 Risk assessment 6 Government policy 5 Management information systems 5