Energy Credit Best Practices – Chapter: Information Technology http://ccro.org © Copyright 2022, CCRO. All rights reserved. 39 System - Any organized assembly of resources and procedures united and regulated by interaction or interdependence to accomplish a set of specific functions.234 See Information System. Trustworthiness - The attribute of a person or enterprise that provides confidence to others of the qualifications, capabilities, and reliability of that entity to perform specific tasks and fulfill assigned responsibilities. Trustworthy Information System - An Information System that is believed to be capable of operating within defined levels of risk despite the environmental disruptions, human errors, structural failures, and purposeful attacks that are expected to occur in its environment of operation. Unbilled - Receivables for product that has been delivered but not yet invoiced. A component of the Current Exposure calculation. 2 (Note 1: Systems also include specialized System s such as industrial/process controls System s, telephone switching and private branch exchange (PBX) System s, and environmental control System s. Combination of interacting elements organized to achieve one or more stated purposes.) 3 (Note 2: There are many types of System s. Examples include: general and special-purpose information System s command, control, and communication System s crypto modules central processing unit and graphics processor boards industrial/process control System s flight control Systems weapons, targeting, and fire control System s medical devices and treatment System s financial, banking, and merchandising transaction Systems and social networking Systems.) 4 (Note 3: The interacting elements in the definition of System include hardware, software, data, humans, processes, facilities, materials, and naturally occurring physical entities.)