Major Information Systems
TIGTA Enterprise System
The Treasury Inspector General for Tax Administration (TIGTA) Enterprise System (TES) is TIGTA's top tier, overall organizational General Support System, as defined based on Federal Information Security Management Act requirements. TES itself does not contain any equipment, but rather functions as the high-level logical system where enterprise-wide security controls are managed and propagated to subsystems. TES is a parent system of TIGTA's three subsystems:
- TIGTA Server Infrastructure Subsystem (TSIS): TSIS supports many minor applications for TIGTA's business operations. TSIS authorization boundary includes server operations and consists of server devices.
- TIGTA Workstations Management Subsystem (TWM): TWM encompasses all TIGTA workstations assigned to TIGTA employees. TWM authorization boundary includes client and end user operations and consists of Windows-based client devices.
- TIGTA Communication Data Network (TCDN): TCDN is the TIGTA network and includes all telecommunications infrastructure devices such as switches. TCDN provides network services throughout TIGTA that are not supplied by the Treasury Network.
Privacy Threshold Analysis and Privacy Impact Assessment
TIGTA conducted Privacy Threshold Analyses (PTA) and Privacy Impact Assessments (PIA) on information systems collecting Personally Identifiable Information as required by the E-Government Act of 2002. The purpose of a PTA and PIA is to ensure that:
- The public is aware of the information we collect about them.
- Any impact these systems have on personal privacy is adequately addressed.
- Only the Personally Identifiable Information needed to administer our programs is collected.