But he had never heard of Fararo Paya converters before. This was significant: he and his staff closely followed Iran’s procurement and manufacturing activities for the nuclear program and weren’t aware that Iran was making its own converters. If Iran was using such converters at Natanz, then the attackers had knowledge of the enrichment program that even some of its closest watchers didn’t possess.
Attackers had deep inside knowledge, given that they knew to attack the Iranian-made frequency converters as well.
