Marcus is continuing to fight the DHS with his online resistance group called the Xnet. Marcus has had many things discourage him throughout the story that would make him want to give up and stop fighting the DHS. One thing that discourages him is that his two friends that were released from the DHS stopped helping him. One of his friends, Van, would not help him at all with his plan because she thought that he would get caught and taken away again. His other friend, Jolu, is a computer programmer and helped him set up and make the Xnet secure, but once things started to get serious, and the risk of getting caught was getting higher, he no longer wanted to be a part of it. Another thing that discouraged Marcus from wanting to continue with the Xnet was that the DHS was catching on to the Xnetters switching the security cards on cars to throw them off. The DHS had also deployed spies onto the Xnet to try and catch the resistance group. Marcus is also discouraged from continuing with the Xnet because his father thinks that it is good what the DHS is doing is good for the country and will make it safer. Marcus feels like he is betraying family by working against the DHS. There are many things holding Marcus back from doing what he wants, but I think he will continue to stick to his goal and then eventually achieve it.
If I could give Marcus advice I would tell him to continue to work towards achieving his goal because if he does he will eventually achieve his goal. Even if does not achieve his goal he will know that he gave it his best shot and did not give up on it.