A piece at euobserver today purports to tell the past, present, and future of Russian cyberwar.  All the usual suspects make an appearance: Estonia, Georgia, Ukraine. These operations are portrayed as successful and a portent of dangerous things to come.
A couple recent analyses are more balanced, I think. Check out Jason Healey‘s 2016 CyCon essay [PDF] on winning and losing in cyberspace. We tend to see short term, tactical successes like Russian cyberattacks on Estonia in 2007, for example, as longer term victories than what they really are.
More recently, over at the Washington Post, Brandon Valeriano, Ryan Maness, and Benjamin Jensen argue that Russia’s cyber strategy is not some unprecedented new tactic. Rather, it is an updated version of “political warfare.”
In short, we should be concerned about Russian hacking. But we shouldn’t panic. A little context can go a long way to providing a less hysterical perspective.