The puzzling thing here is that I read the tool as something the user chose to install on his PC so that instead of seeing a bunch of ads, it would remove those

The puzzling thing here is that I read the tool as something the user chose to install on his PC so that instead of seeing a bunch of ads, it would remove those ads and mine bitcoins using background processes. Not sure how they can say they gained "unauthorized access" if the users were willfully installing this on their PC's. I could certainly see a cyber thief using this to run a botnet to mine BTC, but the MIT guys already said it wasn't really ready for prime time. Again, not sure how this makes this software so dangerous.