• Computer security 1

Security

Note that Security should not be confused with Safety. In some languages (e.g. German, Swedish ...) both meanings are represented by the same word. In Hebrew language security is a name of action ( אבטחה , avtacha ) which sould lead to safety ( ביטחון , bitachon ); Both words are derived from the same root bet-tet-heth ב-ט-ח .

Finance

Private security

Compare with: National security

Telecommunications

• 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.

Another proposed alternative definition:

• When our expectations are met, we can say that quality has been met. When our expectations are met once and again, despite of errors, catastrophes and attacks which in principle could prevent our expectations to be met, we can say that security has been met. Security is not falsable (Popper). We can prove that there has been a security failure, but we can´t prove that there hasn't. Security measures improve the likeliness of expectations to be met, and therefore improve security. With respect to classified matter there is an expectation of the classified matter to remain secret for as long as we wish. A control access system is the security measure that helps this expectation to be accomplished.

Source | Copyright