From The New York Post:
A massive illegal electronic device network capable of crippling cell towers and jamming 911 calls across New York City was uncovered by the Secret Service — just as world leaders prepared to descend on Manhattan for the UN General Assembly, officials said Tuesday.
Investigators discovered the trove of devices — including more than 300 co-located SIM servers and 100,000 SIM cards – at multiple locations within 35 miles of the United Nations.
Officials warned the devices had the capability of carrying out a wide-range of telecommunications attacks — including spamming networks with up to 30 million text messages a minute — that could have had “catastrophic” consequences for the city.