There are no hypersonic cruise missiles. There are cruise missiles that are supersonic for at least part of their trajectory, though that is often achieved by using a final ballistic trajectory.
And no, cruise missiles are not scarier than ballistic missiles. There is no difficulty detecting them or distinguishing them from other aircraft. Ballistic missiles are far harder to deal with because the time to intercept is tiny and they have gravity on their side.
And no, cruise missiles are not scarier than ballistic missiles. There is no difficulty detecting them or distinguishing them from other aircraft. Ballistic missiles are far harder to deal with because the time to intercept is tiny and they have gravity on their side.