X-ray machines and metal detectors are used to control what is allowed to pass through an airport security perimeter

Security spikes protect a gated community in the East End of London

Security is the condition of being protected against danger or loss. In the general sense, security is a concept similar to safety. The nuance between the two is an added emphasis on being protected from dangers that originate from outside. Individuals or actions that encroach upon the condition of protection are responsible for the breach of security. Security means: Look up security in Wiktionary, the free dictionary. ... Image File history File links Download high resolution version (1600x1200, 156 KB) Airport security from de:Bild:Flughafenkontrolle. ... Image File history File links Download high resolution version (1600x1200, 156 KB) Airport security from de:Bild:Flughafenkontrolle. ... Mrs. ... It has been suggested that this article or section be merged with Inductive sensor. ... Baggage is scanned using X-ray machines, passengers walk through metal detectors Baggage screening monitoring at Bangkok Suvarnabhumi Airport Airport security refers to the techniques and methods used in protecting airports and by extension aircraft from crime and terrorism. ... Image File history File linksMetadata Download high resolution version (2816x2112, 3652 KB) Summary Security spikes on the fence of a gated community. ... Image File history File linksMetadata Download high resolution version (2816x2112, 3652 KB) Summary Security spikes on the fence of a gated community. ... Entrance to a guard-gated community (Paradise Village Grand Marina Villas, Nuevo Vallarta, Mexico). ... The East End of London, known locally as the East End, is an area, with no formal authority or boundaries, that spans a number of administative districts of London in England. ... For other uses, see Safety (disambiguation). ...

The word "security" in general usage is synonymous with "safety," but as a technical term "security" means that something not only is secure but that it has been secured. In telecommunications, the term security has the following meanings:^[1] Copy of the original phone of Alexander Graham Bell at the Musée des Arts et Métiers in Paris Telecommunication is the assisted transmission of signals over a distance for the purpose of communication. ...

• A condition that results from the establishment and maintenance of protective measures that ensure a state of inviolability from hostile acts or influences.
• With respect to classified matter, the condition that prevents unauthorized persons from having access to official information that is safeguarded in the interests of national security.
• Measures taken by a military unit, an activity or installation to protect itself against all acts designed to, or which may, impair its effectiveness.

Security has to be compared and contrasted with other related concepts: Safety, continuity, reliability. The key difference between security and reliability is that security must take into account the actions of active malicious agents attempting to cause destruction. Repair and Maintenance is fixing any sort of mechanical or electrical device should it get out of order or broken (repair) as well as performing the routine actions which keep the device in working order (maintenance) or prevent trouble from arising (preventive maintenance). ... Look up access in Wiktionary, the free dictionary. ... The ASCII codes for the word Wikipedia represented in binary, the numeral system most commonly used for encoding computer information. ... Security measures taken to protect the Houses of Parliament in London, England. ... For other uses, see Safety (disambiguation). ... Reliability concerns quality or consistency. ...

Perceived security compared to real security

It is very often true that people's perception of security is not directly related to actual security. For example, a fear of flying is much more common than a fear of driving; however, driving is generally a much more dangerous form of transport. The tool may be mistaken for the effect, for example when multiple computer security programs interfere with each other, so the user assumes the computer is secure when actual security has vanished. This article describes how security can be achieved through design and engineering. ...

Another side of this is a phenomenon called security theatre where ineffective security measures such as screening of airline passengers based on static databases are introduced with little real increase in security or even, according to the critics of one such measure - Computer Assisted Passenger Prescreening System - with an actual decrease in real security. Security theatre is the carrying out of actions which are designed to look as if they improve security whilst at the same time there is little improvement, or possibly even a loss of security through those actions. ... The Computer Assisted Passenger Prescreening System (often abbreviated CAPPS) is a counter-terrorism system in place in the United States air travel industry. ...

Additionally, however, sometimes if it is perceived that there is security then there will be an increase in actual security, even if the perception of security is mistaken. Sometimes a sign may warn that video surveillance is covering an area, and even if there is no actual visual surveillance then some malicious agents will be deterred by the belief that there may be. Also, often when there is actual security present in an area, such as video surveillance, an alarm system in a home, or an anti-theft system in a car such as a LoJack, signs advertising this security will increase its effectiveness, protecting the value of the secured vehicle or area itself. Since some intruders will decide not to attempt to break into such areas or vehicles, there can actually be less damage to windows in addition to protection of valuable objects inside. Without such advertisement, a car-thief might, for example, approach a car, break the window, and then flee in response to an alarm being triggered. Either way, perhaps the car itself and the objects inside aren't stolen, but with perceived security even the windows of the car have a lower chance of being damaged, increasing the financial security of its owner(s). It is important, however, for signs advertising security not to give clues as to how to subvert that security, for example in the case where a home burglar might be more likely to break into a certain home if he or she is able to learn beforehand which company makes its security system. LoJack is a popular device, installed in some cars, that allows them to be tracked after being stolen. ... For other uses, see Sign (disambiguation). ... For other uses, see Window (disambiguation). ... Generally speaking, advertising is the paid promotion of goods, services, companies and ideas by an identified sponsor. ... Securities are tradeable interests representing financial value. ... Burglary is a crime related to United States burglary is a felony and involves trespassing, or entering a building with intent to commit any crime, not necessarily a felony or theft. ...

Categorising security

There is an immense literature on the analysis and categorisation of security. Part of the reason for this is that, in most security systems, the "weakest link in the chain" is the most important. The situation is asymmetric since the defender must cover all points of attack while the attacker need only identify a single weak point upon which to concentrate.

Types of security

For security (collateral), the legal right given to a creditor by a borrower, see security interest A security is a fungible, negotiable instrument representing financial value. ...

Security concepts

Certain concepts recur throughout different fields of security.

• Risk - a risk is a possible event which could cause a loss
• Threat - a threat is a method of triggering a risk event that is dangerous
• Vulnerability - a weakness in a target that can potentially be exploited by a threat
• Exploit - a vulnerability that has been triggered by a threat - a risk of 1.0 (100%)
• Countermeasure - a countermeasure is a way to stop a threat from triggering a risk event
• Defense in depth - never rely on one single security measure alone
• Assurance - assurance is the level of guarantee that a security system will behave as expected

For the Parker Brothers board game, see Risk (game) For other uses, see Risk (disambiguation). ... RNAFs F-16, firing countermeasures (flares) during a solo display at Radom Air Show 2005 A countermeasure is a system (usually for a military application) designed to prevent sensor-based weapons from acquiring and/or destroying a target. ... Defence in depth is a military stategy sometimes also called elastic defence. ... Assurance services have been defined by the American Institute of Certified Public Accountants (AICPA) as Independent Professional Services that improve information quality or its context. Assurance services reduce the information risk; risk that the information provided is incorrect, on more than just financial data. ...

IT Security standards

• ISO/IEC 15443 A framework for IT security assurance (covering many methods, i.e. TCSEC, Common Criteria, ISO/IEC 17799)
  • ISO/IEC 15443-1: Overview and framework
  • ISO/IEC 15443-2: Assurance methods
  • [ISO/IEC 15443-3: Analysis of assurance methods (expected in 2007)]

• ISO/IEC 15408 refer also to Common Criteria

• ISO/IEC 17799:2005 Code of practice for information security management refer also to ISO/IEC 17799

• refer also to TCSEC Trusted Computer System Evaluation Criteria (Orange Book)

The introduction to this article provides insufficient context for those unfamiliar with the subject matter. ... The Common Criteria (CC) is an international standard (ISO 15408) for computer security. ... ISO/IEC 17799 is an information security standard published and most recently revised in June 2005 by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). ... The Common Criteria (CC) is an international standard (ISO 15408) for computer security. ... ISO/IEC 17799 is an information security standard published and most recently revised in June 2005 by the International Organization for Standardization (ISO) and the International Electrotechnical Commission (IEC). ... The introduction to this article provides insufficient context for those unfamiliar with the subject matter. ...

Security experts

• Darko Trifunovic
• Richard A. Clarke
• David H. Holtzman
• Bruce Schneier

Darko Trifunovic, MSL, PhD. is a lawyer based in Belgrade, Serbia and Montenegro and working as lecturer at the Faculty of Security Studies-University of Belgrade. ... Richard A. Clarke (born 1951) provided national security advice to four U.S. presidents: Ronald Reagan, George H.W. Bush, Bill Clinton and George W. Bush, consulting on issues of intelligence and terrorism, from 1973 to 2003. ... David H. Holtzman is a former security analyst and military code-breaker, a futurist, activist, security expert, technologist, technology executive, and writer. ... Bruce Schneier Bruce Schneier (born January 15, 1963) is an American cryptographer, computer security specialist, and writer. ...

See also

Security measures taken to protect the Houses of Parliament in London, England. ... Security is everyone’s responsibility. ... Certified Information Systems Security Professional (or CISSP) is a vendor-neutral certification governed by the International Information Systems Security Certification Consortium ((ISC)2). ... This article describes how security can be achieved through design and engineering. ... Look up hacking in Wiktionary, the free dictionary. ... Cracking-divides a group’s voters into other districts, where they will be ineffective minorities; and kidnapping places two incumbents from the same party in the same district. ... Phreaking is a slang term coined to describe the activity of a subculture of people who study, experiment with, or explore telecommunication systems, like equipment and systems connected to public telephone networks. ... Communications security (COMSEC): Measures and controls taken to deny unauthorized persons information derived from telecommunications and ensure the authenticity of such telecommunications. ... Physical security describes measures that prevent or deter attackers from accessing a facility, resource, or information stored on physical media. ... In the Peoples Republic of China, Public Security Bureau (Chinese: 公安局; pinyin: ) or PSB refers to government offices that handle things such as policing, security and social order, but also issues such as residence registration as well as immigration and travel affairs of foreigners. ... A security officer guards a construction site in the Peoples Republic of China. ... Security police are those persons, usually employed by a governmental agency, who provide police and security services to their properties. ... Searching is the act of trying to find something or someone. ...

References

• • Monahan, Torin, ed. (2006), Surveillance and Security: Technological Politics and Power in Everyday Life. New York: Routledge: ISBN 0-415-95393-6
  • Operations Security Professional's Association Website http://www.opsecprofessionals.org.