Access control 20 Computers 20 Security measures 11 Computer networks 10 Computer security 8 Passwords 7 Data protection 5 Cryptography 2 Data encryption (Computer science) 2 Management 2 Biometric identification 1 Business records 1 Communication systems 1 Data processing 1 Dislocation 1 Elections 1 Identification numbers, Personal 1 International business enterprises 1 Intrusion detection systems (Computer security) 1 Logic, Symbolic and mathematical 1 Machine learning 1 Management information systems 1 Mobile computing 1 Modality (Logic) 1 Neural networks (Computer science) 1 Palette knife painting 1 Public key cryptography 1 Public key infrastructure (Computer security) 1 Shoulder joint 1 System design 1