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In addition , discretionary security controls are required to ensure that only selected users or groups of users may obtain access to data ( e.g ., based on a need-to-know ) . Computer systems should be trustworthy in the sense that they should reliably answer requests from legitimate users and protect confidential information from unauthorized users . One possible and likely scenario is for Google to eventually give users a choice of what types of news searches to include , in other words to create a truly customized news search that also relies on the enhanced filtering capabilities to return specific results . Interlink Networks develops security software for Wi-Fi , mobile , and wired networks , protecting them from unauthorized users and network hackers . Operationally , users are presented with only a limited number of keys instead of the dozens found on traditional systems . If you then add the mod_secdownload module , you can control the security of your streams to prevent deep linking from unauthorized users . By default , the target or actual location of the My Documents folder is C :\ Documents and Settings \ user name \ My Documents , where C is the drive in which Windows is installed , and user name is the currently logged-on user .