HBS is absurd in making this decision. The following excerpt is worth reading
Jim Gray, an associate dean at Duke's business school, said one applicant had tried to search the site for an acceptance letter. "We're clearly looking at his application in a different light at this point," he said.
Stanford's Bolton expressed similar concerns but was more pragmatic, explaining that it was possible that spouses or friends of applicants could have gotten in with a password. "We live in a world where people are innocent until proven guilty," Bolton said.