John has been with Dynamic Software for five years. In that time, he has become the go$-$to person for system backups and computer media for the critical operating and application software for the company. He manages the computer media library and is responsible for making sure all system backups are completed accurately with at least three generations of backups at any one time. The library has about $700$ items, and John is quick on responding to requests for software media or for backup media. John handles the whole operation himself and knows where everything is in the library. If you need something, just call John.

State five security principles or practices based upon the ISC$2$ Study modules that this operation violates and the possible consequences for the organization.

State five countermeasures that you would employ to improve the security of this operation and how those measures would be effective.