ETYM Latin securitas: cf. French sécurité. Related to Secure, Surety.
1. Freedom from anxiety or fear.
2. Measures taken as a precaution against theft or espionage or sabotage etc.; SYN. security measures.
3. The state of being free from danger or injury.
4. Property that one's creditor can claim in case one defaults on one's obligation; SYN. surety.
5. Defense against financial failure; SYN. protection.
6. A guarantee that an obligation will be met; SYN. surety.
7. A formal declaration that documents a fact of relevance to finance and investment; the holder has a right to receive interest or dividends; SYN. certificate.
8. A department responsible for the security of the institutions property and workers.

In finance, assets that may be sold if a borrower defaults on a loan. For example, when a person takes out a mortgage on a house, the house acts as security for the lender. If the person cannot carry on paying the mortgage, the lender can repossess the house and sell it to get back the money owed. Another example would be a person offering stocks and shares as security for a bank loan. In work, job security is freedom from fear of dismissal.

The technologies used to make a service resistant to unauthorized access to the data that it holds or for which it is responsible. A major focus of computer security, especially on systems that are accessed by many people or through communications lines, is the prevention of system access by unauthorized individuals.
Protection against loss or misuse of data; see data security.

A vendor-neutral security certification developed by the Computing Technology Industry Association (CompTIA).