Steve writes "Some Penn State professors and students have published a way to jam cellular voice service with simple text messages. From the article: 'Because text messages are transmitted on the same signal that is used to set up voice calls, just 165 messages a second is enough to disrupt all cellphones in Manhattan.' Cellular providers, of course, fired back, one stating that it 'constantly and aggressively monitors potential threats to the integrity and security of its network.'"
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