There are two things we can count on in the wake of the Equifax breach, already credited with exposing a majority of American adults to the possibility of identity theft. The first is that more and potentially worse breaches are in our future. The second is that companies will need to be prodded toward smarter cybersecurity practices and faster reporting of breaches.
Details of the breach—which Equifax said it discovered in late July—have only recently been revealed by the credit-reporting company and by Mandiant, the...