Not to interfere with any internal screaming, but I think (hope?) most would agree that a secondary elephant in the room is that suppressing knowledge so as not to help the "bad guys" tends to be the worse evil.
I don't see how that applies in this case. This is just someone saying hey bad guy, here is an idea on how to perform your dastardly act "better."
Having this public doesn't really defend against it any way. And if someone were to perform this act, it would be easy enough to figure out what was going on.
I believe it applies, as someone who doesn't know much about crypto AND is interested in protecting myself, this small tidbit of information moves me closer to being an aware and self-defensive computer user.
Any bad guys with sufficient ambition and intelligence are going to get as far as they're going to get, and if you're afraid of talking in public because a "bad guy" might overhear you and become smarter, you really are living on the wrong side of matters.
