The FBI has reportedly warned US energy and defence firms to be on the lookout for a sophisticated attack against their computer systems by sophisticated Iranian hackers. The report does not go as far as to apportion blame to the Iranian authorities. But, if accurate, the threat would appear to tie in with research of Operation Cleaver, a hacking campaign orchestrated by an Iranian team that the firm dubbed Tarh Andishan. The government in Tehran is said to have vehemently denied any connection with the attacks.”]