NSA information assurance guidelines specify that one should cut the cables to all unnecessary IO devices before deploying hardware in a sensitive environment.

NSA information assurance guidelines specify that one should cut the cables to all unnecessary IO devices before deploying hardware in a sensitive environment. Not sure where that one is, but there is a wealth of data here: http://www.nsa.gov/ia/mitigation_guidance/index.shtml http://www.nsa.gov/ia/mitigation_guidance/index.shtml It's safe to assume they left a few things out, but part of NSA's mission is to protect the communications of US interests (government and enterprise) so it actually is part of their mandate to give advice like this.