sandbox

A restricted environment in which certain functions are prohibited. For example, deleting files and modifying system information such as Registry settings and other control panel functions may be prohibited. Sandboxes are used when executable code has come from an external source that is not entirely trusted. See Java sandbox and behavior blocking.

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sandbox - (UK: "sandpit") 1. A protected, limited environment where applications (e.g. Java programs downloaded from the Internet) are allowed to "play" without risking damage to the rest of the system. 2. A term for the R&D department at many software and computer companies (where hackers in commercial environments are likely to be found). The term is half-derisive, but reflects the truth that research is a form of creative play. Compare playpen. 3. link farm.