Zero Days is a documentary about the malware worm Stuxnet. It was famously used against Iranian centrifuges. There are claims about Stuxnet that it was made by America and Israel in a joint effort.
Stuxnet is a self-replicating computer malware. It was used to destroy a key part of an Iranian nuclear facility. Ultimately, it spread beyond its intended target.
Stuxnet shut down by its own kill switch. It happened on June 24, with the replication routines in Stuxnet turned themselves off, effectively halting the spread of the sophisticated cyber weapon.