The NSA's hoard of cyber weapons makes some experts nervous

The disclosure this week of a cache of files supposedly stolen from the National Security Agency has put a spotlight on secret cyber weapons the NSA has been holding -- and whether they should be disclosed. Security researchers have been poring over a sample set of hacking tools that may have been stolen from the NSA. An anonymous group called the Shadow Brokers has posted the samples online and is auctioning off the rest, claiming they contain cyber weapons that rival the Stuxnet computer worm....