The label on the old Hikvision DVR read: Ds-7616hi-st . To the security guards at the Silver Creek Mall, it was just the box that kept the cameras rolling. To Leo, the night technician, it was a curse.

Then the screen flickered back to life.

That night, Leo sat in the security office, the hum of 16 hard drives filling the silence. He inserted the drive into the Ds-7616hi-st’s front USB port. The small LCD screen blinked: Firmware Updating… Do Not Power Off.

The Ds-7616hi-st only had 16 inputs. Yet there it was: . The name field read: NOT ON NETWORK. INTERNAL BUFFER. And the video feed was black—except for a single red pixel, moving slowly across the darkness.