2. The government is lying about the potential consequences of the attacks. They're exaggerating how easy it would be to dramatically collapse important institutions via computers.
This, easily
The problem with a cyber attack is that it has to be stealthy, but it also has to be effective in terms of destroying things. That kind of creates a paradox for the virus, because if you're destroying things, you're not exactly stealthy. The faster you spread the virus, the more detectable it becomes as well, because there are ALWAYS side-effects and there are several corporations in the world dedicated to finding every virus.
So the solution is to just do things really slowly. That's what the Olympic Games viruses did. They are arguably the most complex viruses ever made, with the entirety of US intelligence behind the engineering, and they still took years 1-2 years to affect a very specific target (nuclear plant centrifuges for Stuxnet, and oil refinery computers for Flame).
The bottom line is that it's definitely possible that there are tons of attacks, but they either get detected too early, or are harmless or not effective.
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_foolmo_
'and out of the blue and completely unprovoked came foolmo and his insult' - Anagram