The problem I see is that interrupting the enjoyment of Second Life for others IS a violation of the TOS and thats what these Security scripts do.
You are correct that it is in the TOS.
However, I don't see anywhere that any form of privacy is a right that the TOS provides, especially as to protecting space between 40m and 768m.
Unless someone can prove me wrong?
For those who don't want visitors, please feel free to send them my way.
Lewis