We know that security experts are fairly nervous of late and this video of Skyscraper Space Invaders seemed to really freak out McAffee. “Perhaps the first demo was just for fun, but the others will have less juvenile goals,” said McAfee Avert Labs researcher Francois Paget.

Yves Peitzner, director of Brainstormclub, the German company that produced the video, said that this was a promotional idea for a video game conference. They produced it even when the planners backed out. Two buildings in Munich were used and the game was added in post production.