This gets right to the heart of the issue, IMHO. Hiring has become such a litigation-prone process that companies are now incentivized to leak as little information as possible.
It's sad because nobody wins -- companies get sued for petty nothings, candidates who have been wronged have no recourse, and candidates aren't given the feedback they need to improve themselves.
Our startup isn't hiring yet, but I must confess this kind of thing has me worried...