# Terrorist Identities Datamart Environment **Entity class:** Federal identity repository **Domain:** Counterterrorism / identity intelligence / watchlisting **Aliases:** TIDE **Maturity:** Developed ## Definition The **Terrorist Identities Datamart Environment (TIDE)** is the U.S. government's central repository for identity information on known or appropriately suspected international terrorists and related persons, administered by the [[wiki/National Counterterrorism Center|National Counterterrorism Center]]. Federal agencies nominate identities from intelligence and law-enforcement information; NCTC analysts create and enhance identity records. TIDE is the upstream identity backbone, not the operational watchlist itself. NCTC exports an unclassified subset of terrorist identifiers to the FBI's Terrorist Screening Center for the consolidated watchlist, which supplies downstream screening systems such as aviation, visa, border, and law-enforcement checks. ## “Who Is This, Who Are They Connected With, and Where Are They Moving?” In 2017, an NCTC director described identity management as among the most tactically important work in counterterrorism: establishing who a person is, who they are connected with, and tracking movement. TIDE therefore belongs to [[wiki/Identity Intelligence|Identity Intelligence]], not merely name storage. Records can join names and aliases to biographic, biometric, documentary, and relationship information, subject to law and nomination standards. ## The Dragnet Metaphor Counterterrorism and law-enforcement professionals sometimes describe screening architectures through the **dragnet** metaphor: cast a net across a high-volume encounter point, then sort the resulting flow for identities of interest. Michael D. Bayer, a former State Department transnational-crime official writing as a National Defense Intelligence College research fellow, described law enforcement as implementing a “dragnet” strategy at borders or other movement chokepoints. Applied to TIDE, the metaphor explains the system architecture: TIDE supplies identity data; downstream watchlists and screening systems encounter a much larger traveling or transacting population; matching rules select records for additional handling. **“Dragnet” is tradecraft shorthand and critical description, not NCTC's formal definition of TIDE.** It also identifies the central risk: broad screening can produce bycatch when names, documents, or biometrics are ambiguous. ## Identity Resolution, Error, and Redress The system has historically been name-heavy. The official fact sheet acknowledges that people with similar names may be stopped for additional screening and points to DHS TRIP for traveler redress. DOJ Inspector General work documented duplicate and inconsistent identity records and the NCTC Identity and Person Merge effort. These are not clerical side issues: a bad merge or stale record can propagate into several downstream systems. Purely domestic terrorism information is excluded from TIDE's stated international-terrorism repository scope, although international records may involve U.S. persons under applicable standards. Terrorist screening, investigative attention, arrest authority, and criminal guilt remain separate determinations. ## Relationships - **administered by:** [[wiki/National Counterterrorism Center|National Counterterrorism Center]]. - **analytic domain:** [[wiki/Identity Intelligence|Identity Intelligence]] and [[wiki/Identity and Relationship Analysis|Identity and Relationship Analysis]]. - **feeds:** terrorist watchlisting and [[wiki/Screening|Screening]] through the Terrorist Screening Center. - **supports:** [[wiki/Counterterrorism Intelligence|Counterterrorism Intelligence]]. - **operational metaphor:** [[wiki/Dragnet|Dragnet]]. - **quality requirement:** [[wiki/Entity Resolution|Entity Resolution]], provenance, periodic review, correction, and redress. - **distinct system:** [[wiki/ICEPIC|ICEPIC]] performed a DHS analytical function and was not TIDE. ## Sources / Provenance - [NCTC — TIDE fact sheet](https://www.dni.gov/files/Tide_Fact_Sheet.pdf) - [NCTC — 2017 remarks on TIDE and identity management](https://www.dni.gov/files/NCTC/documents/news_documents/CNASopeningremarks.pdf) - [DOJ Office of Inspector General — TIDE and watchlist data quality](https://oig.justice.gov/archives/reports/FBI/a0741/findings.htm) - [Michael D. Bayer, *The Blue Planet: Informal International Police Networks and National Intelligence* (National Defense Intelligence College, 2010)](https://www.govinfo.gov/content/pkg/GOVPUB-D5_200-PURL-gpo6214/pdf/GOVPUB-D5_200-PURL-gpo6214.pdf)