[chrsstrm]

Just prior to your mentioned timeline Hotmail was vulnerable via query string params. A rather non-technical friend of mine brought this up in conversation and I didn't believe him, so he told me to log in to my account. He took a quick look at the URL and wrote down a param, then logged into my account on his machine. IIRC it was patched about month later but still, those early days of the web were pretty wild.