I just saw this pretty in-depth article on how Russian hackers attacked NASDAQ.
Some interesting excerpts:
The hackers had used two zero-day vulnerabilities in combination. The use of one zero day indicates a sophisticated hacker; more than one suggests government. Stuxnet deployed four—a sign that the code’s authors had done advanced reconnaissance and knew precisely how various systems worked together.
This reads like it's out of a bad movie script:
The NSA presented its conclusions to top national security officials: Elite Russian hackers had breached the stock exchange and inserted a digital bomb. The best case was that the hackers had packed their malware with a destruction module in case they were detected and needed to create havoc in Nasdaq computer banks to throw off their pursuers. The worst case was that creating havoc was their...