> I admit it, I'm largely ignorant of security issues. What kind of 
> bad thing can you do with Ruby constants?

It depends on the coder in question:

- matz once single handedly trapped Chuck Norris within a constant void.

- Lesser ruby coders may utterly fail in doing so, ending up as bloody 
BBQ.

Also, there exists believable rumours that one can do time travels with 
constants, if used in the right way (full moon, 12 fresh sheep, some old 
gold coins and a pirate curse...)

But again beware, only those strong in will may succeed...
-- 
Posted via http://www.ruby-forum.com/.