Verb
fall into the wrong hands (third-person singular simple present falls into the wrong hands, present participle falling into the wrong hands, simple past fell into the wrong hands, past participle fallen into the wrong hands)
(idiomatic) To become the possession of, or be discovered by, an unfriendly third party.
The policeman was concerned that the lost handgun would fall into the wrong hands.
At the same time, we'll engage Russia to seek further reductions in our nuclear arsenals, and continue leading the global effort to secure nuclear materials that could fall into the wrong hands - because our ability to influence others depends on our willingness to lead and meet our obligations. Barack Obama