I've worked on the software of a lot of big energy companies. A lot of those companies can make tons of money just because they are huge and have deals going on everywhere. This gives them a lot of information about what's going on in energy markets all around the world. In short, this information is highly valuable, and yet it often flies around corporate networks in plaintext. Just undetectably getting this information to an outside party would be a highly illegal act that would enable a great many other profitable and highly illegal acts.

(And it would also be very hard to do this without getting caught. Even harder than most people would think. Particularly at the point where you're trying to make money.)