Russian hackers piggy-backed on an Iranian cyber-espionage operation to attack government and industry organizations in dozens of countries while masquerading as attackers from the Islamic Republic, British and US officials said on Monday. The Russian group, known as "Turla" and accused by Estonian and Czech authorities of operating on behalf of Russia's FSB security service, has used Iranian tools and computer infrastructure to successfully hack in to organisations in at least 20 different countries over the last 18 months, British security officials said. The hacking campaign, the extent of which has not been previously revealed, was most active in the Middle East but also targeted organisations in Britain, they said. Paul Chichester, a senior official at Britain's GCHQ intelligence agency, said the operation shows state-backed hackers are working in a "very crowded space" and developing new attacks and methods to better cover their tracks. In a statement ...