Exclusive: This pizza box-sized equipment could be key to Ukraine keeping the lights on this winter

CNN  —  Staring down another frigid winter and desperate to keep the lights on, Ukraine’s power grid operator has surreptitiously imported custom-built equipment designed to withstand Russian electronic warfare attacks with the help of US officials, CNN has learned. Engineers at US tech giant Cisco spent weeks building and stress-testing the new gear in a lab in Austin,…