https://warontherocks.com/2017/08/are-cyber-weapons-too-dangerous-to-use/

The upshot is that it is possible for states to go on the offensive in cyberspace without undermining cybersecurity. Unlike ice-nine, the tools the United States creates to fight in this realm do not appear, at least so far, to be uncontrollable. There may be good reasons to eschew offensive cyber operations, and the United States already has a process to determine whether to act in any specific case, but officials need not be deterred by the fear of extensive and lasting collateral damage.