Not surprisingly, Fonseca also isn't happy with the coverage: he says the only proven crime here is a hack, and he maintains that his company didn't do anything wrong, such as helping clients dodge taxes. To him, journalists are taking data "out of context" and creating a sensationalist frenzy with very real consequences, such as pressuring the Prime Minister of Iceland to resign.
The issue, as you might suspect, is that the claims hinge on Fonseca's word. As yet, there aren't any corroborating details surrounding the hack, let alone a possible suspect. It's too soon to say how much of this is genuine concern about scapegoating versus an attempt to deflect criticism of Mossack Fonseca's role in storing overseas income.