### Question
How does Information Security define agency information system?


### Answer
Under *6 U.S.C. § 149*, **agency information system** is defined as:

> an information system used or operated by an agency or by another entity on behalf of an agency

#### Citation:
  - *6 U.S.C. § 149*
  - Heading: **CHAPTER 1-HOMELAND SECURITY ORGANIZATION > SUBCHAPTER II-INFORMATION ANALYSIS AND INFRASTRUCTURE PROTECTION > Part C-Information Security**

