I'm very keen to see where this goes for Hutchins. It's possible he would have the skills to do this or he could just be in the wrong place at the wrong time from a cyber perspective.
Marcus' Twitter account had him asking for code on Kronos after it's release last year. He does reverse engineering of code for a living, let's not forget. It would be strange behaviour from someone who supposedly wrote it, unless he's trying to put up a smoke screen.
He would be flying very close to the wind to release malware and also investigate it. Is he the cyber version of Dexter? I think not.
With skilled adversaries out there, he could actually be the victim of an orchestrated smear campaign. Look at the Mandiant analyst who was hacked recently. Marcus is a BIG target.
NHS cyber-defender Marcus Hutchins to appear in US court