They certainly have done it if they are able to do it. They have also attempted to penetrate the Republican data and emails. It goes with the territory. The publication of the contents, though, is more likely due to people within the organization selling codewords and more. When an organization is so obviously corrupt that everyone in it knows it is corrupt then the corruption is NOT limited to the bosses nor to one set of aims. Venality drives everything from the top to the bottom of the organization. At the top the corruption is for the sake of power and all the money in the system or the world is the goal. Below that immediate profit is the desire. Anyone who is righteously incorrupt is too stupid to function. The fact that one or even two rats have been killed does not keep the others in line if the profit is sufficient.
Rot always starts at the top. In government, the employees quietly go along with the corruption and malfeasance even if they don’t like what’s going on. The vast majority of people who work in government are personality types who highly value their job security and benefits and simply will not make waves. Its not so much about profit in this case, but your point is still valid and applies to lots of organizations.
One thing we can be certain of: this administration is totally corrupt.