It's just not written very clearly. The blogger approached MS, so once they determined the code was authentic they could have easily got the FBI involved who t

It's just not written very clearly. The blogger approached MS, so once they determined the code was authentic they could have easily got the FBI involved who then requested the information from the blogger's account. But it doesn't read that way, it suggests that MS looked into it because it just says "investigators" and it's up to the reader to surmise what that means. My first thought it meant MS did the looking into the account mainly because there's no mention of a timeline of the actions taken. If it said something like "after MS authenticated the code the FBI was contacted who then requested a warrant to search through the blogger's account" then it would far more clear as to what was going on. Makes me wonder if anyone bothered to ask the blogger if he would cooperate, as he did approach MS first, or if they just start looking through the person's account? Later in the article they mention investigators again after the mention of criminal charges and then you can likely assume they mean criminal investigators.