The big deal with this one is that they don't have to achieve
Oh, no, the FBI would
Well, fine, but the above statement was delivered as a response to the question "Would it require a court order to use it?" Response it may be, but it ain't an answer.
This also puts the anti-virus companies in a difficult position. Such a trojan clearly falls into the realm of destructive and invasive programs that anti-virus software is designed to disable. Would an existing product catch it? Do the anti-virus companies have an obligation to update their product so that it will? Can the FBI, in the name of the War Effort, forbid the companies from doing this?
Will the FBI be able to preserve the secret of their "back-door"? Will other hackers be able to discover and exploit it? And if they do, will the FBI insist that this door be left open regardless?
Am I too paranoid? Is there such a thing as "too paranoid"?
Have I used too many question marks in this comment?