You might recall the Stuxnet virus which is rumored to have crippled Iran’s nuclear program. An Australian company called Zapruder’s Other Films created a brief video of what Stuxnet is/was capable of doing. It also warns us that the source code is available for every hacker to play with.
I think the video is meant to scare people and it does simplify the facts a bit. But it’s still a nicely animated feature on computer security.
Anatomy of a Computer Virus: A 3.5 Minute Primer – Open Culture