翻訳と辞書
Words near each other
・ secondary storage
・ sector interleave
・ sector interleaving
・ sector map
・ sector mapping
・ secure file transfer protocol
・ secure hash algorithm
・ secure multipurpose internet mail extensions
・ secure shell
・ secure sockets layer
security
・ security administrator's integrated network tool
・ security association
・ security association id
・ security through obscurity
・ sed
・ see
・ see u see me
・ seed
・ seek


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security : FOLDOC
security
Protection against unauthorized access to, or alteration of, information and system resources including CPUs, {storage devices} and programs.
Security includes:
* {confidentiality} - preventing unauthorized access; {integrity} - preventing or detecting unauthorized modification of information.
* authentication - determining whether a user is who they claim to be.
* {access control} - ensuring that users can access the resources, and only the resources, that they are authorised to.
* {nonrepudiation} - proof that a message came from a certain source.
* availability - ensuring that a system is operational and accessible to authorised users despite hardware or software failures or attack.
* privacy - allowing people to know and control how information is collected about them and how it is used.
Security can also be considered in the following terms:
* physical security - who can touch the system to operate or modify it, protection against the physical environment - heat, earthqua


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