Security experts said on Monday a highly sophisticated computer virus is infecting computers in Iran and other Middle East countries and may have been deployed at least five years ago to engage in state-sponsored cyber espionage. Evidence suggest that the virus, dubbed Flame, may have been built on behalf of the same nation or nations that commissioned the Stuxnet worm that attacked Iran 's nuclear program in 2010, according to Kaspersky Lab , the Russian cyber security software maker that took credit for discovering the infections. Kaspersky researchers said they have yet to determine whether Flame had a specific mission like Stuxnet, and declined to say who they think built it. Iran has accused the United States and Israel of deploying Stuxnet. Cyber security experts said the discovery publicly demonstrates what experts privy to classified information have long known: that nations have been using pieces of malicious computer code as weapons to promote...