Few con­cepts have seized our polit­i­cal imag­i­na­tion in the last decade like secu­ri­ty. Few con­cepts have mobi­lized us to engage so many extra­or­di­nary mea­sures, to ded­i­cate so much mon­ey, and to change the lives of so many peo­ple as secu­ri­ty. And the con­cept of secu­ri­ty has not at all remained sta­ble. It has­n’t remained at all aloof or untouched by this process.