Opportunity:  In the context of computing a concept called chroot in the unix context,

              usually modelled or labled ...called safe zone ...where programs executing
              in the context can exploit flaws like buffer overflow's etc ...which (chroot)
              limit access to programs ...its definition being "A chroot on Unix operating systems
              is an operation that changes the apparent disk root directory for the current running
              process and its children"

              understanding from the above ...chroot as a concept can be exploited on the client side ...for
              restricting malice's percievable from 'Internet cache' ....in the context of a  web-browser,
              directories or folders hosting ....email's (on client's as well as email-servers)
              ...other download attachments ...comming from or recieved from anything over the network ideally.

              similarly the below concept can

              The sticky bit is an access-right flag that can be assigned to files and directories on Unix systems
              be enforced or exploited upon such folders or containers.

              viz. above solve's or reduces the  percievable risks from virus ...and should
                   be envincible.

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              Several program (software) require or use the concept of cache ....viz. temporary space ...for
              persistance ....given the perils and merits of cache ....a non erasable cache means ...ability to
              retrive or restore state ...resulting into potential exploitation of data ...more so on computers
              used for public usage  

              ....in this context the above concept and context can be exploited ....apart from it as a quality

              benchmarking ...an option ...to make programs (software products) ...using cache ...as a configurable
              option that exploits a private cache or system cache (virtual memory) ...given that system cache
              or virtual memory ...flushed or erased ....or depending on how ....sessions (for instance in web-based
              applications) ....may be applied to all data residing in all such cache's ....for information ...one
              may refer to what may termed as proxies[reverse]-servers ...and how their cache states are maintained
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              storing or structuring the main memory....usually termed RAM is very important for any kind of efficient
              usage in abscense of sufficient main memory[RAM] ...

              structuring such a main memory on the lines of the embedded db (vxdb) used in vxfs/vmdisks or more 
              elegantly much on the lines of boot-sector or the intial 512KB of the disk ...with virtual pointers
              into pages or buffers or [IO-block-size...pagesize]*number
             
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Note: The above problem statement having been encountered in various scenarios
      and detailed in various 'Proof of concepts' as mentioned in 
      
       http://uk.geocities.com/ravivenkatus/projects.pdf
       http://ravishankarkv.tripod.com/projects.pdf
        ....apply appropriate
      'use-case' modeling, rationalize and arrive at a workable and feasible 
       solution both commercially and techinically viable.
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