Hacking

A man with a gaunt, scarred face and glowing blue lights on his head stares intensely, then the scene cuts to a city under attack by large mechanical creatures firing blue energy beams, followed by a group of emaciated people walking through a ruined urban street, then back to the man with the glowing lights, then to a close-up of a computer screen with rapidly scrolling code and data, and finally to a wide shot of a digital network with glowing lines and data streams.