Yes, but probably not in your computer. I'm sure that there are daily attempts to breach into government networks around the world.
Ira Hunt (CIA chief technology officer) said in 2014 something like "we like the fitbit because it doesn't have a ... it doesn't ... well I can't say but we like the fitbit."
Let's not talk about fantasy of what could happen, but whether it actually is happening right now on everyone's personal computers. No. It's not.