Further, whether there was anything to tell about or not, it's the tell that gets you the discharge, not being gay.
Some interesting reading for you: http://sldn.3cdn.net/48ee19f69cf2e4d028_54m6bri8u.pdf
Note this comes from a pro-repeal organization, but their primary purpose is to protect gays serving and goes into great detail what will get people discharged and how the process works and so on. Take it for what it is worth, but I have not caught this group in factual errors.
Mike Almy : The Faces of DADT (by Servicemembers United)
AS I understand it, hack is the wrong word to use. Unlawful access would be correct though.