“the only thing to attack would be the markets or exchanges.”
Ok, not trolling here, but then why wouldn’t they do precisely that? And then, would that destroy it as a useful thing since it’s an internet based thing?
It’s pretty worldwide now. You can trade bitcoins for cash in almost any large city in the world. It would take a coordinated effort by the world’s governments to bring it down. Even then, it might not be possible. Especially with some countries, especially, Germany embracing it. The US/NSA isn’t too popular right now. I’ve read where China is considering a crypto-currency. The cat might be out the bag?