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National Security Letters — Part 1

1188 pages · May 11, 2026 · Document date: Dec 4, 1981 · Broad topic: General · Topic: National Security Letters · 1018 pages OCR'd
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seckgr Typical NSL Retention and Database Use Phone Records: NSL toll billings records are typically uploaded into Telephone Applications (TA) after { For Bhi analysis. The information can also be uploaded from TA to other applications (such as cd for analysis. NSL-derived toll billings records are also placed in Automated Case Support (ACS) with case information. ACS information is uploaded into Investigative Data Warehouse (IDW). bl Telephone Phone Records Applications Sther applications ACS [Case Information) Email Records: NSL electronic transactional information is typically entered into ACS upon receipt. ACS information is uploaded into Investigative Data Warehouse (ID ( S } Sena Counterterrorism email-information-can be manually entered mto-(S! mail bl information may in some cases be entered into spreadsheets and other databases for analysis. Email Records bl Spreadsheets ‘Databases Financial and Credit Information: Financial and credit information is typically entered into ASC upon receipt. ACS information is uploaded into Investigative Data Warehouse (IDW). Financial and credit information may in some cases be entered into spreadsheets and other databases for analysis. Financial/tredit ACS Information . Spreadsheets _ f/Databases 1073946 DATE; 06-15-2300? CLASSIFIED BY 65179/DHH/KSR/RU ALL INFORMATION CONTAINED REASON: 1.4 {¢) EC KE HEPEIH IS WWCLASSIFIED EXCEPT DECLASSIFY OM: 06-15-2032 WHERE SHOWN OTHERWISE wa 7)
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