This is a choice only you can make (or a trusted friend who could keep
it secret, but anything known by more than one person is not a secret
anymore).

In my experience, even dangerous ideas, that you refrain communicating,
are soon discovered and publicated by others.

Or rather, there are some people whose sole purpose is to find and
exploit anything and any idea they can, and they will outguess you
already.

So if your idea can do some good, and if there can be some good people
that may use it for good, instead of using it as an evil weapon, perhaps
it would be worth sharing it.