An exiled Iranian opposition group Thursday claimed a hacking attack which it said temporarily took control of dozens of websites run by Tehran’s municipality and thousands of the capital’s surveillance cameras. Iranian state media said earlier that the internal computer system of the municipality of Tehran was targeted in a “deliberate” shutdown on Thursday in the latest apparent cyber attack in the country. The People’s Mujahedin of Iran (MEK), which the Islamic republic views as a “terrorist group” and has outlawed since 1981, said in a statement that their operatives inside the country had…