A malicious entity that can enter the dreams of the victim while the actual entity in the computer gets free of its digital prison to slowly begin to kill you. The "Giga" on the left is an accurate presentation of what the entity looks like. The entity is a stealth-based predator that kills pretty much anything it can get it's hands on. It is twice as tall as the average Scratch Cat. When it gets in the real world, you cannot do anything to kill it. Your best bet is to report the project it was in and pray that the project gets deleted. (No there is no supernatural way of it getting in your dreams. It just glues onto your mind after seeing it.)
