“But cyber-spying raises two tricky issues. One is that the low cost of gathering information this way may encourage more of it, and a Hobbesian world of spiralling espionage would be bad for everybody. What’s more, since there is no sharp distinction between digital spying tools and weapons—Stuxnet, for instance, damaged systems as well as stealing secrets—there is a danger that the greater ease of attacking an enemy’s digital assets means that governments will make war on each other with greater abandon. There is a close parallel with drone warfare, which is similarly cheaper and less risky than its flesh-and-blood counterpart.”
Source:Computer spying: Attack of the cybermen | The Economist