Charles Guillemet

Charles Guillemet

Chief Technical Officer (CTO) at Ledger
Charles Guillemet discovered the world of security at the age of 12 when he acquired his first computer. Fascinated by computer systems, he developed a passion for hacking, both as a hobby and for profit. In 2017, Charles joined Ledger as the Director of Security. He founded the “Donjon” team, specializing in research and enhancing the security of Ledger products. In 2019, he was appointed Chief Technology Officer of Ledger. In 2024, under his tech leadership, Ledger expanded its offerings with two innovative devices featuring secure touchscreens: the Ledger Flex and the Ledger Stax.

Speaker’s stage appereances

Panel discussion
Securing Bitcoin: From Personal Sovereignty to Institutional Defense
Whether you're securing your own keys or protecting a multi-million-dollar treasury, Bitcoin security is not optional—it’s mission-critical.

This panel dives into real-world strategies for safeguarding Bitcoin across different threat models and scales:

Best practices for individuals and families

Cold storage, hardware wallets, multisig, and air-gapped setups

How companies are building operational security without compromising usability

Threats from phishing, social engineering, and supply chain attacks

The future of custody tech and privacy-preserving solutions

From personal sovereignty to institutional-grade defenses, you’ll walk away with actionable insights to level up your security—no matter where you are in your Bitcoin journey.
Main stage
Fri, 09:40
Lang EN

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