I was following this development from its inception earlier in the day. It originally started on various imageboards, before making its way to reddit, and eventually to the House of Representatives and mainstream media. Basically, what happened is that 'Internet people' began digging into one of the IT technicians of her server. People with lots of time on their hands discovered a hosting website, along with his email address. This email address led them to a username on reddit, which in turn led to the posts he made about asking for advice on stripping data from the emails. They also searched through his social media accounts in order to determine whether the reddit account was genuine. The reddit account is important because he apparently made posts asking for advice on how to tamper with the emails that were stored (and were, at the time, subject to demands from authorities). In the FBI report, they claimed there was insufficient evidence to support the claim that Hillary Clinton or her aides were aware of the destruction of these emails. The posts by the IT technician seem to suggest otherwise, as he made reference to the customer ("they don't want"). All of those posts on reddit were deleted hours after this started to spread over the Internet. Somebody needs to make a movie out of this.