The Times revealed that some 9,000 email accounts, including those belonging to Theresa May and other cabinet ministers, were subjected to a sustained attack on 23rd June. 90 accounts were compromised.
According to The Times report, Russia was initially blamed but investigators have traced the attack to the Tehran regime.
It is believed to be Iran’s first significant act of cyberwarfare on Britain. The motive for the attack was not known, but experts have suggested that Iran’s Islamic Revolutionary Guard Corps could be using cyberwarfare to undermine the nuclear deal.