Hey, Sam, from your blog posts I have the impression you take this issue seriously. Please take this as a friendly suggestion.

Anyway, if I were the OP I'd be worried that YC might be more concerned with PR damage control than justice for a handful of low-level employees. For some companies, that has meant discrediting the complainant and building a paper trail against them. (EDIT: I'm not referring to any YC company, just companies in general.)

Are there any guarantees you can offer for whistleblowers?