After the Affordable Care Act went into effect I signed our company up for our state's marketplace. While browsing our plan options, I noticed the url used a scheme like marketplace.org/employers/341/plans.aspx. Of course, I tried changing the number in the url to 342 to see what happened. To my astonishment, it loaded up the next company's plans, including a list of employee names, ages, plan cost, and SSNs. After I…
I don't know, that sounds like a pretty valid response given that you "shopped a few other companies to see how our plans compared".
First, it's trivial to just use a different IP address. Second, even if you could track people perfectly, which you can't, who the hell thinks it's okay for data to get leaked as long as you know who it gets leaked to?