I'll let Schneier answer that, in case you didn't read the article: > The open question is which countries have sophisticated enough cyberespionage operations

I'll let Schneier answer that, in case you didn't read the article: > The open question is which countries have sophisticated enough cyberespionage operations to mount a successful attack against one of the journalists or against the intelligence agencies themselves. And while I have my own mental list, the truth is that I don’t know. But certainly Russia and China are on the list, and it’s just as certain they didn’t have to wait for Snowden to get access to the files.