2/18/2004
Gio AAAS 04
4
2. Access control mechanisms keep bad guys from getting IN.
•Current Solution-- SECURITY: Keep bad guys OUT
–Access control requires authentication and authorization
–Collaborators  and  Customers get into authorized areas
•Once they are IN no further checking occurs in computer systems
–Further checking is done when physical assets are protected
•Examples: warehouses, even warehouse stores:
•
•
•
Collected
contents
Access control
Release filter
Not done now in
computer systems
Why this omission?
Privacy is entrusted to security specialists and surrogates
•   Cryptographers: important tools, but serves binary          settings
•   Database administrators: valued for making data available
•   Network administrators: keep accessibility by users