Computer and Network Security involves protecting computer and network systems that hold critical information. It also concerns the infrastructure of networks, routers, domain name servers, and switches [1]. There are three components to security, and they are requirements, policy, and mechanisms. Security requirements can vary based on the information one is trying to protect, for example the difference between a company and the government. A security policy can be based off these requirements. A system is secure if it is always in a state that is allowed, and a user can only perform actions that are allowed, and is insecure if the system can enter a disallowed state or a user can perform a disallowed action[1]. This policy is kept up using security mechanisms, which can be either technical or operational; for example, a technical security mechanism would keep someone from accessing classified files, and a operational security mechanism is more like a law or rule like not being allowed to have music files on work computers [1].
This topic is never discussed or mentioned in the movie. The movie mainly focuses on having the computers in it fail without outside interference, which they do frequently. See Computer Reliability for more details on failures. The closest topic present in the movie to theme of computer security is several instances where the characters gain access to locations that they may not be authorized to access, but that, again, avoids the "computer" part of computer security, focusing on the "security" part instead. The absence of the topic allows a watcher to see a viewpoint contrary to that of other contemporary movies. That is, that a computer can fail, and in fact does fail, without outside interference. In most other movies, the computer systems are perfect until the evil "hacker" touches them. A case could potentially be made that the destruction of the computer "Earth" is a security problem, but that would be like claiming that a hammer is a security risk to a laptop.
M. Bishop. (2003, Jan.-Feb.). What is computer security? IEEE Security & Privacy, vol. 1, no. 1, pp. 67-69. doi: 10.1109/MSECP.2003.1176998.