What is security?
Kyle Amon,  Page 12 

Security
n. 1. Freedom from risk or danger; safety. 2. Freedom from doubt, anxiety, or fear. 3. Something that gives or assures safety, as a. A group or department of private guards. b. Measures adopted by a government to prevent espionage, sabotage, or attack. c. Measures adopted, as by a business or homeowner, to prevent a crime such as burglary or assault. d. Measures adopted to prevent escape. 4. Comp. Sci. a. The level to which a program or device is safe from unauthorized use. b. Prevention of unauthorized use of a program or device. 5. Something deposited or given as assurance of the fulfillment of an obligation; a pledge. 6. One who undertakes to fulfill the obligation of another; a surety. 7. A document indicating ownership or creditorship; a stock certificate or bond. ... See SECURE.

Fundamentally, a state of minimized fear, doubt and anxiety.

An inherently emotional phenomenon (an ideatic, an intangible)