Security in law or business meaning rights in property that protect a lender against loss if the borrower defaults, or fails to repay, a loan. When a piece of property is used as security for a loan, the lendor has a security interest in such property. It is important to distinguish between security interests and securities, which are stocks and bonds that represent equity or debt interests, respectively, in a corporation or other entity.
The laws concerning security interests are separated into laws concerning personal property and laws concerning real property. Security interests in personal property are governed by Article 9 of the Uniform Commercial Code, a form of which is in force in each state. Security interests in real property are governed by the mortgage laws of each state, which vary considerably among the states.
Security and Fortification of Buildings
Security also refers to self-defense, firearms, surveillance (such as IP cameras), home security and defensive landscaping, and any other technology and technique that is now indispensable to all modern "fortification" from banks, to military or government and business offices to homes to rural survivalist retreats. A fortified and secure location is indefensible without some sort of implementation of security people, products and procedures.
Security and Privacy Protection for Electronic Communications
Security also relates for specifically to security and privacy of network-Internet and computer security (such as secure operating systems, cryptography, VPN, antivirus, etc), communications security, and operational security (OPSEC)