Basic HTML version of Foils prepared February 20 1999

Foil 9 Distributed Objects are less secure

From DATORR and New WebFlow and Gateway Developments Second DATORR Meeting Sandia National Laboratory -- February 15-16 1999. by Tom Haupt


1 can play both client and server
  • in client/server you trust the server, but not clients
2 evolve continually
  • objects delegate parts of its implementation to the other objects (also dynamically composed at runtime). Because of subclassing, the implementation of an object may change over time
3 interaction are not well defined
  • because of encapsulation, you cannot understand all the interactions between objects
4 are polymorphic (ideal for Trojan horses!)
5 can scale without limit
  • how do you manage access right to millions of servers?
6 are very dynamic

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