# National Policy on Technical Surveillance Countermeasures
> **US Department of Defense** · Interim final rule. · Published 1998-01-30 · Effective 1997-09-16 · 63 FR 4582
## Document
- **Document number:** 98-1957
- **Category:** other
- **Sub-agency:** US Department of Defense
- **Federal Register citation:** 63 FR 4582
- **CFR reference:** 32 CFR 149
- **Publication date:** 1998-01-30
- **Effective date:** 1997-09-16
## Abstract

This rule is published to limit the use of technical surveillance countermeasures within the boundaries of the U.S. to cases where there is a reasonable showing of threat. No impact on the public is forseen.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/1998/01/30/98-1957/national-policy-on-technical-surveillance-countermeasures)
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