Even if it were possible to physically sever the entire U.S. telecommunications system from the rest of the world (and given enough time and money, and the acceptance of a significantly slower Internet, anything could be done), hackers could immediately create a work-around. Consider: Before the Dutch police shut it down last November, the Bredolab botnet commanded an army of 30 million virus-infected zombie computers to send spam. It did so with just over 140 command-and-control servers in the Netherlands, leased through a hosting provider. The man arrested in the case was Armenian. In this era of cloud computing, when anyone from anywhere can rent servers, including American ones, by the hour, a kill switch would be useless.