U.S. lawmakers might well call for heightened Web surveillance measures, using technologies such as Carnivore and Echelon, the global telecommunication spy network that U.S. officials have long denied exists.

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Customers include cable and satellite network operators, telecommunication companies, broadcasters and Internet companies that provide video services.

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The Society for Worldwide Interbank Financial Telecommunication, or Swift, is a worldwide financial messaging network to facilitate the interbank transfer of funds.

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The IRGC's new network named Basir, or "Perceptive" is a domestically built, secure telecommunication channel that will allow its highest-level officers to communicate and command brigades in the case of an attack, the guard's newspaper, Sobhe Sadegh, reported last week.

WSJ: Iran Makes Censorship Official