Cory at BoingBoing puts it best:

Sunday’s Snowden leaks detailing the Tailored Access Operations group — the NSA’s exploit-farming, computer-attacking “plumbers” — and the ANT’s catalog of attacks on common computer equipment and software — were accompanied by a lecture by Jacob Appelbaum at the 30th Chaos Communications Congress. I have seen Jake speak many times, but this talk is extraordinary, even by his standards, and should by watched by anyone who’s said, “Well, they’re probably not spying on me, personally;” or “What’s the big deal about spies figuring out how to attack computers used by bad guys?” or “It’s OK if spies discover back-doors and keep them secret, because no one else will ever find them.”

Also, see Der Spiegel’s sidebar feature for a look at the source documents.