I offer 3. through the client or transport layer if mishandled at the code level. There have been some really esoteric bugs like the UTF-7 XSS exploit in older IEs. Not a lot of devs know/knew that even doing something as seemly harmless, and rampantly common, as character encoding improperly could be a security hole.

In reply to Re^3: Test Driven Development, for software and for pancakes by Your Mother
in thread Test Driven Development, for software and for pancakes by talexb

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