Category Abbreviation:  LNSL

Category Description:  Related to administrative orders sent to compel the recipients of the letters to provide information to federal investigators. A national security letter (NSL) is a law enforcement investigative tool similar to a subpoena and is most commonly issued by the FBI. NSLs are used to obtain information from companies as part of national security-related investigations.

Required Warning Statement:

Required Dissemination Control:

Authorities

Applicable DoD Policies

Examples

• Contents of the order
• Recipient's personal information