So, like a highly evolved parasite, the malware instead piggybacked on human connections, infecting and traveling on USB sticks. There it would lie dormant and unnoticed until one of the drives happened to be plugged into the enrichment facility’s isolated systems. (Siemens software engineers might have been the carriers for that malware, or the USB malware might have been more purposefully planted by a human spy working in Natanz.)
