Are Closed Digital Training Networks Vulnerable to Hackers? Thinking Like a Hacker: Infiltration Seemingly, one of the things that a closed digital training networks would be almost invulnerable to is infiltration. Typically when one hears the word infiltration it conjures up images of a hacker sitting in a dark room, slumped over a keyboard of course, hacking into a Defense Department computer thousands of mile away. It is important to realize, especially with respect to a closed digital training network, that an insider attack is much more likely to occur. In his definition of an insider attack Einwechter describes that it is “a crime perpetrated by, or with the help of, a person working for or trusted by the victim.” (2002). In the case of a closed digital training network like the one this student works with the attacker might be the students, other instructors, or fellow contractors, essentially anyone who has access to the systems. Thinking like a hacker, how would one infiltrate closed digital training network? Well, sometimes one not even need to be a hacker to stumble upon unauthorized or restricted documents. Usually the weaknesses of a closed network are going to lie with access and account rights. Granting proper account rights consists of the administrator weighing what kind of access is appropriate to give to the type of user. In a larger environment where an administrator is in charge of hundreds of systems this task might be very difficult. As stated by Einwechter in his explanation of the finesse it takes to grant access and account rights, “Give a person too much access, and they may gain access to data and other resources that are not required for their job . . . [access rights that are too] restrictive and he or she may be unable to do their job” (2002). A written policy or memo which informs users of the different accounts