Computer security is a branch of computer technology known as information security as applied to computers and networks. The objective of computer security includes protection of information and property from theft, corruption, or natural disaster, while allowing the information and property to remain accessible and productive to its intended users. The term computer system security means the collective processes and mechanisms by which sensitive and valuable information and services are protected from publication, tampering or collapse by unauthorized activities or untrustworthy individuals and unplanned events respectively. The strategies and methodologies of computer security often differ from most other computer technologies because of its somewhat elusive objective of preventing unwanted computer behavior instead of enabling wanted computer behavior.

Computer security
Secure operating systems
Security architecture
Security by design
Secure coding
Computer insecurity
Vulnerability	Social engineering Eavesdropping
Exploits	Trojans Viruses and worms Denial of service
Payloads	Backdoors Rootkits Keyloggers

See also

Computer security portal

Attack tree Authentication Authorization CAPTCHA CERT Cloud computing security Computer insecurity Computer security model Countermeasure (computer) Cryptography Cyber security standards Dancing pigs Disk encryption Data loss prevention products Data security Differentiated security Exploit (computer security) Fault tolerance Firewalls Full disclosure High Technology Crime Investigation Association

Human-computer interaction (security) Identity management Information Leak Prevention Information security Internet privacy IT risk ISO/IEC 15408 Network Security Toolkit Network security OWASP Penetration test Physical information security Physical security Presumed security Proactive Cyber Defence Sandbox (computer security) Security Architecture Separation of protection and security Threat (computer) Vulnerability (computing) Privacy software

From Wikipedia, the free encyclopedia : Security by security