It was a crisp October evening in Longmeadow, the kind of night when the moon hung low and pumpkins grinned wickedly from every doorstep. The streets buzzed with excited children darting from house to house, clutching bags of candy as they eagerly sought their next sweet treasure. But while the town's residents were busy celebrating Halloween, something far more sinister lurked in the shadows — not outside their homes, but inside their computers.