Who's hacking whom?

The United States has charged two Chinese men it says hacked the computer systems of companies and government agencies in a dozen countries, in what it claims was a wide-reaching state-backed campaign of cyber espionage.

The US routinely depicts itself as a victim of cyberattacks. Although this time, Washington has taken a slightly different approach, stressing that the alleged Chinese hackers have stolen secrets from other countries as well.

But as usual, it is offering no proof to support its allegations.