Jon Lech Johansen

Norwegian programmer, one of the three DeCSS developers

  • Fame52.3
  • Momentum7.1
  • Developers rank#140
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Source-basedFalling
  • Fame52.3
  • Momentum7.1
  • Developers rank#140
  • Wikipedia2K
Born 1983 · age 43Norway

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  • Wikipedia
    17 languages
    Cross-language footprint
  • Age
    43
    Born 1983
  • Awards
    2
    recognised works
Summary
Updated 2026-06-26

Jon Lech Johansen, also known as DVD Jon, is a Norwegian programmer who has worked on reverse engineering data formats. He wrote the DeCSS software, which decodes the Content Scramble System used for DVD licensing enforcement. Johansen is a self-trained software engineer, who quit high school during his first year to spend more time with the DeCSS case. He moved to the United States and worked as a software engineer for about a year, from October 2005 until November 2006, whereupon he returned to Norway. Johansen moved back to the United States in June, 2007.

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The six component signals behind the Fame score, and their ranks across the leaderboards.

Fame
Falling
52.3
Composite of search demand, mentions, audience & graph footprint.
Score components
Momentum7.1
Historical14.3
Source confidence70.0
Completeness80.0
Global rank
Country rank
Category rank
#140
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