NEW YORK (AP) — The U.S. Secret Service has found and is quietly dismantling a massive network of “SIM farms” across the New York area just as world leaders gather for meetings at the United Nations. McCool compared the potential impact to the cellular blackouts that followed the Sept. 11 attacks and the Boston Marathon bombing, when networks collapsed under strain. So what are these SIM farms and what are they capable of? What the tech doesSIM farms are hardware devices that can hold numerous SIM cards from different mobile operators. MobileX, the producer of some of the SIM cards recovered in the raids, said they are prepared to cooperate with authorities in their investigation.