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单词 security
释义
security

Computer
  • Prevention of or protection against (a) access to information by unauthorized recipients or (b) intentional but unauthorized destruction or alteration of that information. Security may guard against both unintentional as well as deliberate attempts to access sensitive information, in various combinations according to circumstances. The concepts of security, integrity, and privacy are interlinked. See integrity.


Economics
  • A financial asset described by a contract that sets out the terms and conditions under which payments will be made. Securities include government debt, both long- and short-term, company shares, and company debt. Securities may be registered, where legal ownership depends on the entry in a register, usually run by a bank, and the paper is merely evidence of ownership; or may be in bearer form, where ownership is conferred by possession of the document. See also bearer bond; blue chip; collateral; fixed-interest security; gilt-edged security; irredeemable security; long-dated security; marketable security; redeemable security; short-dated security; undated security.


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