[Suicide Junkie]

Not quite.

Consider three techs.
Tech A is a racial tech.
Tech B is a normal tech; it requires Tech A level X to open.
Tech C is a normal tech; it requires Tech B Level Y to open.

Tech A can never be stolen, researched or traded unless the other race has the same racial trait.
Tech B can not be researched or traded, but it can be stolen (via deconstruct & analyse)
Tech C can be stolen in the same way as B. Tech C can also be traded and researched *after* level Y of tech B has been stolen.