The problem is almost certain to get worse, spreading to even more areas of life as bots are trained to become better at mimicking humans. Given the degree to which product reviews have been swamped by robots (which tend to hand out five stars with abandon), commercial sabotage in the form of negative bot reviews is not hard to predict. In coming years, campaign finance limits will be (and maybe already are) evaded by robot armies posing as “small” donors. And actual voting is another obvious target — perhaps the ultimate target.