"... software downloaded through cell phones stole passwords, intercepted e-mails and created havoc. Soon 60 million cell phones were dead. The Internet crashed and commerce collapsed."
Wait there's more:
"The U.S. isn't prepared to respond to an attack on its computer networks that could cripple communications and electrical power systems..."
This is where this newspaper article "Cyber Attack Would Strike the U.S. Hard" [STL Post-Dispatch, 2.17.2101] starts sounding eerily Hollywood. In fact this scenario specifically has already been adapted to the screen in the form of "Live Free or Die Hard."