This is a documentary that involves the US, Israel and Iran. It is about a malicious sophisticated software code called Stuxnet which is a computer worm. A worm, unlike a computer virus which like its named biological equivalent, since a virus requires a cell host to replicate itself. But the computer worm can self replicate and activate itself. The code was well written, with no bugs and it has a zero-day exploit. Which means it could infect the computer immediately, as day zero is an undisclosed computer-software vulnerability that hackers can exploit to adversely affect computer programs, data, additional computers or a network. It is known as a "zero-day" because a virus or worm usually reported or announced before becoming active, but this is activated immediately. In Stuxnet, there were several zero days. Those with experience in looking at the code security as the professionals they came to the conclusion that it looks like a code written by a nation-state pro