“‘A line has been crossed. The hard part is knowing how to respond effectively,’ argues one U.S. official. Retaliating in kind may not be wise for a country that is far more dependent on its digital infrastructure than is Russia. But unless some clear signal is sent, there’s a danger that malicious hacking and disclosure of information could become the norm.
As always with foreign-policy problems, a good starting point is to try putting ourselves in the mind of our potential adversaries. The point of this exercise isn’t to justify Russian behavior but to understand it — and learn how best to contain it.”
Source: The Cold War is over. The Cyber War has begun. – The Washington Post
