What happens when the Chief Technology Officers of Trezor and Ledger meet in the same studio?
In this special Trezor Talks episode, we leave behind social media drama for industry insights. Tomáš Sušánka (Trezor) and Charles Guillemet (Ledger) join Danny Sanders, Trezor's CCO, for a rare, behind-the-scenes look at the future of crypto security and self-custody.
You’ll learn:
• Why devices without screens give a false sense of security
• How both companies are preparing for quantum computing
• The Ledger feature that saved $18 million for users in one month
• Where Trezor and Ledger collaborate to push the industry forward
• What a day in the life of a CTO looks like
• The biggest crypto security challenges in 2025
Two hardware wallet titans discuss one shared mission: keeping your keys safe and supporting self-custody.
Timestamps:
(0:00) – Introduction
(3:04) – Charles’s journey into crypto security
(7:46) – Tomáš’s background and experience
(11:34) – Trading compliments (becoming frens)
(14:31) – Education & the self-custody mission
(19:12) – Balancing security, privacy, and usability
(26:30) – Industry security challenges today
(29:31) – Ledger's security philosophy
(36:25) – Trezor’s open-source approach
(37:47) – Why device screens matter for safety
(41:04) – Clear signing initiative and collaboration
(47:11) – Smart contracts and user freedom
(53:50) – A day in the life of a CTO
(59:35) – Future tech & industry trends (quantum computing)
(1:09:36) – Challenges for Bitcoin & post-quantum cryptography
(1:12:17) – Bitcoin, stablecoins & traditional finance
(1:18:22) – Conclusion and traditional awkward handshake (outro)
Secure your crypto with Trezor: https://trezor.io/