Basic HTML version of Foils prepared June 5 99

Foil 70 Distributed Objects are less secure

From Use of Java in Computational Science DoD Modernization Users Group Conference Monterey -- June 7 99. by Tom Haupt,Geoffrey C. Fox


1 can play both client and server
  • in client/server you trust the server, but not the clients
2 evolve continually
  • objects delegate parts of their implementation to the other objects (also dynamically composed at runtime). Because of subclassing, the implementation of an object may change over time
3 interactions 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 the access right to millions of servers?
6 are very dynamic

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