...with all sorts of drones / driverless cars around nowadays, you can imagine some of them could be remotely hacked and made to land or park themselves more or less inconspicuously atop a silo at the right time. You don't need to "hack a silo" (which, I hope, is really not possible!) anymore to incapacitate the adversary from delivering a nuclear strike, just hack any random device that can be moved around at the right time. Hopefully you can't use the same tricks to trigger a missile launch, so overall the new situation might have increased humanity's chances of long term survival :)

Now it would be obvious, but in a future with god knows how many small little e-critters swarming around everywhere doing god knows what... yeah, bad I idea to share, but someone in a foreign military paid to have such an idea would've already had it anyway :)