The whole point of the article is a discussion about the line between "exploit" and "incredibly boneheaded app implementation" and where the responsibility should lie.
https://app.applyyourself.com/?id=SU-GRAD
All in all, it was an awful, horrible experience (the website application). What a disgrace to supposed prestigious Universities. Not to mention a waste of pompous application fees for many hopefuls.
Anyway, while not a Harvard professor, "philg" is a very interesting guy who has done a bunch of worthwhile things (e.g. "Philip and Alex's Guide to Web Publishing", htttp://photo.net, Ars Digita, etc.) that should be of interest to Hacker News readers. He writes well--in books, essays and blog posts--and he writes provocatively, with a mix of snark and self-deprecating humor that many enjoy.
In short, he's worth knowing about in my view (and I'm happy to know him). For links to his past and present projects: http://philip.greenspun.com For background info: http://en.wikipedia.org/wiki/Philip_Greenspun
P.S. As many readers here already know, he's also the author of "Greenspun's tenth rule of programming" (which led to the term "Greenspunning"): http://en.wikipedia.org/wiki/Greenspunning
Synopsis: Business schools outsource their student application web app, said web app has bug that allows students to change GET parameters and see their acceptance status early. Exploit is posted to BusinessWeek forums, and at least some of those students who tried the hack were denied admission to Harvard.