You also seem to assume that, however badly the Russians have us over a barrel through infected infrastructure, that we haven’t gotten into their stuff just as badly, or worse. All the regulations that U.S. spooks complain about aren’t a problem once you’re on foreign soil working on foreign targets. Cyberwarfare favors the attacker, just because we’re very vulnerable isn’t a reason to believe we don’t have the upper hand.
(And as noted, the U.S.’s budget for this stuff is way greater than our opponents’. If we’re not decisively on top something is seriously wrong.)
In fact, most everything published besides your testimony suggests the opposite.
I'm happy to change my view when I encounter new evidence, but I see absolutely no evidence that the Canadians (or anyone else outside of Russia / China) have hacked the shit out of the entire USA.
I know some intelligence people. This isn't what they tell me. They tell me that western governments are obsessed with following the law and limiting what their cyber operations touch. It's born out by what I understand from non-classified sources. For example, I read through the source code of Stuxnet when it first came out. There was a ton of guards put in to limit the potential damage it made.
That Canada spies on the USA more than Russia is the biggest bullshit I've ever heard. Read the Snowden leaks and listen to natsec podcasts. The Russians are in a ton of the US infrastructure and the CIA is freaking out about it to the point where they consider cyber to be a bigger existential threat than a nuclear armed DPRK.