Yes, I and my coworkers could've sold the realtime trades of a petroleum multinational to the highest bidder, including ones that hadn't happened yet. That would've been easy, and would've been worth 100's of millions to someone. Not getting caught and having your life ruined -- that was scary and would've been hard. Now, if I was working for a sovereign power, like China, and my life was there anyhow, then pulling stuff like that in the US wouldn't be so hard.