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Is Encapsulation a Security device?


FAQ: No. Encapsulation is about error prevention. Security is about preventing purposeful attacks.

FQA: Depends on the kind of "encapsulation". Some managed environments rely on their support for run time encapsulation, which makes it technically impossible for code to access private parts of objects, to implement security mechanisms. C++ encapsulation evaporates at run time, and is almost non-existent even at compile time - use #define private public before including a header file and there's no more encapsulation (correction). It's hardly "encapsulation" at all, so of course it has no security applications - security is harder than encapsulation.

The capital E and S in the question are very amusing. I wonder whether they are a manifestation of Deep Respect for Business Values or Software Engineering; both options are equally hilarious.
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