I watched the BBC Storyville version of this film, which appears to run about 20 minutes or so shorter than the feature currently in cinemas; not sure what was lost in that, but I mention it for context. At the start of the film we have several talking heads who refuse to even respond to a question regarding the computer virus/worm which attacked Iran's nuclear centrifuges; this opening sets the stage for a documentary where a lot has to be pieced together, or cannot officially be known, but yet manages to do it in a way that gives the viewer a broad view, with enough detail to aid understanding, but nothing likely to lose you (I say this as someone who can setup his wifi but not much more).
The film starts after the fact and works backwards. In doing this it allows to do enter the subject via the security companies who found this virus and started trying to figure out what it does. This is done in a way that is engaging and accessible, even though you are talking about guys reading screen after screen of code. From here the film starts to draw in the politics, to explain Iran, and as it does this, the pieces fall into place – just as they did for the security guys. This framing helps make the film clear to follow, but also builds the tension in the film as we go from the unknown, to the understanding, and then are left with what it means for the road ahead.
The film's ending doesn't really do a good job of leaving us with that chill (I think the drawing in of the Iran deal didn't really work), but mostly it still does leave the viewer thinking about how much could go wrong if key infrastructure elements were switched off or controlled to do harm. Watching it a few days after the inauguration of Trump only makes it more chilling, since the only time I have heard him speak about this he said "So we have to get very, very tough on cyber and cyber warfare. It is — it is a huge problem. I have a son. He's 10 years old. He has computers. He is so good with these computers, it's unbelievable. The security aspect of cyber is very, very tough. And maybe it's hardly doable". Hardly oil on troubled waters.
