Full timeline · 1995-2026

The complete chronology in a single timeline. Each milestone is sourced.

• 1995-1999
  Net Development — co-founder. One of France's leading web integrators (80 employees). Merger with Reef.
• 1998
  Le Parisien, 2 May: « Yoann, 16 ans, J'ai piraté l'US Air Force ».
• 1998
  Article Cryptographie et commerce électronique with Prof. Christian Gavalda (Uniform Law Review UNIDROIT, 1998 - 2/3).
• 1997
  Founding of the Salamandre firm by Pierre Sellier (intelligence and strategy consulting). David Nataf referenced as « Key figure » by Wikipedia. Historical clients: EADS, Safran, Dassault, Areva.
• 1996-2006
  Jean-Pierre Millet law firm. Defence of French companies (defence, aerospace, telecom) and hackers (Yoann, Frantic). Legal Director REEF. Co-founder IESSI Brussels.
• 1998-2002
  SIGINT/ISS expert with the European Parliament. Final report A5-0264/2001. Hearings by Plagnol (Hyper-Republic), Raffarin (Economic Intelligence), lecturer IHEDN.
• 1999
  Book Chevaliers d'Internet et pirates informatiques (J'ai Lu, ISBN 978-2290303443, 239 p.). Co-authors Vandoorselaere, Golovanivsky, Langlois. Testimonies Catherine Siguret. Article Cryptologie (Juris PTT, 1st semester).
• 1999
  Commercial court hearing 8 October. Interview Yediot Aharonot with Ronen Bergman.
• 2001
  Creation of NextAdvantage and lettrerecommandée.com. First French registered electronic mail before La Poste. Libération, Le Temps, 01net.
• 2001
  Identification of French bank card security flaw (CP8B0, 320-byte key) — Intelligence Online, 15 November. Article « Computer and network law » Lamy May edition.
• 2002
  La Poste launches its registered electronic mail (Usine Nouvelle, August) — after nataf.com.
• 2003
  Book La guerre informatique (Presses de la Renaissance, April, ISBN 978-2856169124). Les Échos (5 May), 01net.
• 2004
  Article Hidden treasures of Ramat Gan, Le Figaro Magazine, 18 December. Co-written with Christophe Doré. Intellectual roots of carat.technology.
• 2008
  Pivot NextAdvantage to résilier.com (electronic churn). Challenges (9 January), Stratégies (12 June).
• 2009
  WIPO patent WO2009077806 filing — process for notification with probative force. Le Monde (8 June) on cancellation.
• 2019
  Founded the Porto gilding workshop.
• 2020-2021
  La Poste de Côte d'Ivoire in production — state registered electronic mail with probative value. Africanews (20 May 2020), BBC News Afrique, RFI (31 May 2021).
• 2024-2026
  Deployment of carat.technology, Rain (traced reforestation with multi-AI Council Vision), Mishpat, TELMAD Verein Zug, Salamandre Ltd (salamandre.co.uk).