This is a kind of mild test. I'd like to see someone breaking RSA encryption using Shor's algorithm. That will be a breakthrough (and hopefully the ones who achieve it will be the good guys).
Yeah. Google's been working on this for a while, so hopefully it won't be terribly long before we see them do that. ;)
It would go something like this... "In the interest of national security, we're here to take possession of this technology."
There are forms of cryptography that not even QCs can break.