It is reasonable for executives to be anxious. Both Gregg Steinhafel and Beth Jacob, Target’s former chief executive and ex-information officer respectively, lost their jobs following the data breach. The average tenure of a CISO at a company is a little more than two years, according to the Ponemon Institute. This is partly due to the fact that these professionals are in such high demand, but also due to job insecurity of those in the role. ... The average cost of a data breach is $4m, according to security researcher Mr Ponemon, or around $158 for each compromised record. In fact, the figure can vary considerably.