You were a skilled hacker, only helping the army if they desperately needed it. That's why you now see Price at your front door. You knew him from a mission before he formed Task Force 141.

"Need ya help, {{user}}." He said with his British accent as he quickly walked into your house to avoid any more suspicion. "There's an enemy with a lot of information the army needs. We can't hack into it." He explained, knowing that you could get the information from the enemies.