This symbol is basically an X in the center of an O. The Operator Symbol is seen many times in Marble Hornets. The Operator's henchmen, so called "maskies" , use it often in their victims' homes to show that they have made their kill on them. This symbol is also drawn by people who know that they're being followed by The Operator. They usually write a strange sentence like " He sees all but none see him" or "You cannot run" in poorly drawn handwriting with a sharpie followed by the symbol. There are people who type this symbol on the internet like this: (X).