Security measures 185 Computer networks 164 Computer security 153 Computer crimes 63 Investigation 45 Computer hackers 28 Access control 23 Management 22 Client/server computing 21 Firewalls (Computer security) 20 Internet 16 Operating systems (Computers) 16 Penetration testing (Computer security) 15 Data protection 14 Database security 14 Computers 13 Forensic sciences 13 Testing 12 Virtual computer systems 12 Certification 11 Examinations 11 Prevention 11 Data recovery (Computer science) 10 Internet programming 10 Internet telephony 10 Cloud computing 9 Computer viruses 9 Cyberterrorism 9 Electronic data processing personnel 9 Microsoft software 9