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Computer security, also known as cybersecurity or IT security, refers to the security of computing devices such as computers and smartphones, as well as computer networks such as private …

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The meaning of SECURITY is the quality or state of being secure. How to use security in a sentence.

SECURITY definition: freedom from danger, risk, etc.; safety. See examples of security used in a sentence.

SECURITY meaning: 1. protection of a person, building, organization, or country against threats such as crime or…. Learn more.

If something is security for a loan, you promise to give that thing to the person who lends you money, if you fail to pay the money back.

Definition of security noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Security means safety, as well as the measures taken to be safe or protected. In order to provide adequate security for the parade, town officials often hire extra guards.

Dec 4, 2025 · As part of our continuing mission to reduce cybersecurity and physical security risk, CISA provides a robust offering of cybersecurity and critical infrastructure training opportunities.