The death of Ahmadi, a leading specialist in cyber defences, could be an extension of this campaign of subterfuge. Iran has been accused of carrying out a number of cyber attacks detected in the West. Shashank Joshi, an expert at the Royal United Services Institute (Rusi), said this was seen as a lesser threat than the nuclear programme. “Iran’s cyber attacks on Israel and elsewhere in the region are a rising threat and a growing threat, but it hasn’t yet been seen as a major and sustained onslaught, so it would be pretty novel and significant to take this step in the field of cyber-warfare at this time,” he said.