Mathematics is the invisible engine driving the most critical systems of our world—from secure communications and energy grids to finance and military defense. Yet, lurking in the shadows are unsolved equations whose solutions could unlock unimaginable power. Some mysteries remain unsolved not only due to their complexity, but because their answers could grant access to technologies or knowledge capable of catastrophic consequences. As society becomes ever more dependent on mathematical foundations, we must consider: are some problems unsolved for our own protection?