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Security normally refers to Confidentiality, Integrity and Availability.

Briefly, your files must be:

  • accessible: only to the persons and applications you authorize, and with the minimum privilege required (if a user has only the need to read a file, he/she MUST NOT have the right to modify or delete it);
  • modifiable: only by users or applications authorized to do so;
  • available: when the authorized users need to access them: a file is useless if it not available when you need it.

Additionally, there are a couple of additional related aspects that are:

  • authenticity: the files must be attributable without doubts to the creator;
  • non-repudiation: the creator of the file must not be able to disavow the files he/she has created.
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Q: What is security of files?
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