Sarbox and Corporate PIs: Any link?

BusinessWeek makes an interesting point in a long article about what appears to be a bull market for private investigators. It suggests one reason for heightened demand is Sarbanes Oxley, which puts pressure on companies to root out fraud. I can see a board wanting a thorough background check on a potentially significant financial hire. If a firm is about to ink a deal with a foreign partner, I can likewise see the need for inside information that isn't readily available. Of course at some point, the tactics can turn way too sleazy and end up really embarrassing the company--like Hewlett Packard, which may never be the same. It would be really ironic if one were to justify questionably ethical tactics with a law aimed at upgrading corporate ethics.

For more on the PI market:
- Here's the BusinessWeek article