# Mark Klein

> Mark Lee Klein was an American AT&T technician and whistleblower who revealed details of the company's cooperation with the United States National Security Agency in installing network hardware at a site known as Room 641A to monitor, capture and process American telecommunications. The subsequent media coverage became a major story in May 2006.

*American whistleblower (1945-2025)*

**Canonical URL:** https://fame.am/person/mark-klein

## Identity
- **Profile type:** Scientist ([Wikidata](https://www.wikidata.org/entity/Q39631))
- **Category:** Scientists
- **Country:** United States
- **Born:** 1945-05-02
- **Died:** 2025-03-08
- **Status:** deceased
- **Gender:** male

## Fame
- **Popularity score:** 48.5 / 100
- **Momentum:** 1.9 / 100  (trend: STABLE)
- **Historical depth:** 8.6 / 100
- **Attention shift:** 10.4 / 100
- **Source confidence:** 55.0 / 100
- **Profile completeness:** 70.0 / 100

## Sources
- [Mark Klein](https://sw.wikipedia.org/wiki/Mark_Klein)
- [مارك كلاين](https://ar.wikipedia.org/wiki/%D9%85%D8%A7%D8%B1%D9%83_%D9%83%D9%84%D8%A7%D9%8A%D9%86)
- [مارک کلین](https://azb.wikipedia.org/wiki/%D9%85%D8%A7%D8%B1%DA%A9_%DA%A9%D9%84%DB%8C%D9%86)
- [Mark Klein](https://ca.wikipedia.org/wiki/Mark_Klein)
- [Mark Klein](https://de.wikipedia.org/wiki/Mark_Klein)
- [Mark Klein](https://en.wikipedia.org/wiki/Mark_Klein)
- [مارک کلین](https://fa.wikipedia.org/wiki/%D9%85%D8%A7%D8%B1%DA%A9_%DA%A9%D9%84%DB%8C%D9%86)
- [Mark Klein](https://fr.wikipedia.org/wiki/Mark_Klein)
- [Mark Klein](https://mg.wikipedia.org/wiki/Mark_Klein)
- [Mark Klein](https://pt.wikipedia.org/wiki/Mark_Klein)
- [Wikidata](https://www.wikidata.org/wiki/Q3294135)

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