Computer security Security measures 20 Computer networks -- 14 Data protection 11 Computer crimes -- 5 Business enterprises -- 4 Computer viruses 4 Investigation 4 Microsoft Windows (Computer file) 4 Cryptography 3 Electronic commerce -- 3 Spyware (Computer software) 3 Application software -- 2 Computer hackers 2 Computer programs 2 Data protection -- 2 Development 2 Forensic sciences 2 Internet (Computer network) -- 2 Prevention 2 Privacy, Right of 2 Access control 1 Accidents -- 1 Coding theory 1 Compuiter networks -- 1 Computer Technology 1 Computer crime 1 Computer crimes 1 Computer crimes- -- 1 Computer hacking 1