• Night-shift worker installed an application with a virus on a PC.
• The infected PC controlled the HVAC system and could not close vents for fumigation.
• The plant had to stop production for 4 days to allow re-scheduling of the required treatment.
• Thin clients prevent access to operating system.
Fumigation of a large food production site takes careful planning and coordination to guarantee safety and prevent contamination. Fumigations are scheduled during employee holidays to prevent production interruption.