The Bank of Israel’s Information
and Statistics Department gathers and manages files from a variety of sources,
some of which contain itemized information. In order to enable freedom of
information while also maintaining the confidentiality of the information, the
Department builds anonymization procedures for the information files. This is a
complex process, the aim of which is to prevent the identification or
disclosure of sensitive or confidential information on individuals whose data
appear in the files. This work outlines the process of anonymization of
itemized data, defines the basic terms involved, presents accepted methods for
assessing the risk of disclosure in the files, and samples the implementation
of the process.
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