Coldcard Aftermath: What's Next for Bitcoin Security | Jade, Passport, Trezor, SeedSigner

<p>Mentor Sessions Ep. 089: Bitcoin hardware wallet makers Zach Herbert, Tomas Susanka and Drew Fischer discuss the Coldcard hack, multi-sig, entropy and self-custody security.</p><p><br /></p><p>The Coldcard hack was the single biggest blow to Bitcoin self-custody yet — so four rival hardware wallet makers sat down together to figure out what it means for everyone holding their own keys. This is the conversation the industry needed.</p><p><br /></p><p>Zach Herbert (Foundation Passport), Tomas Susanka (Trezor), Drew Fischer (Blockstream Jade) and Seed from the SeedSigner team break down the fallout: what the vulnerability actually exposed, why open source alone wasn't the safety net people assumed, and the entropy/dice-roll debate that split the panel. You'll learn why multi-vendor multi-sig is emerging as the strongest defense, how entropy is really generated on these devices, and the honest trade-offs between usability and security. You'll also hear the fresh news on the Trezor fulfillment-partner data leak (disclosed August 10, 2026) and what to do if you're worried about shipping and privacy.</p><p><br /></p><p>This is a rare, candid roundtable where competitors disagree openly — and that dialog is exactly what makes it worth your time.</p><p><br /></p><p>⏱️ Timestamps:</p><p>0:00 - Intro</p><p>0:56 - Four wallet makers respond to Coldcard hack</p><p>1:58 - Ben's question on self-custody downstream effects</p><p>3:02 - Zach on short-term setback and great hardening</p><p>6:19 - Tomas on AI helping attackers and defenders</p><p>8:44 - Drew on custodians, ETFs and verify don't trust</p><p>10:30 - SeedSigner on entropy sources and multi-sig</p><p>13:11 - Usability versus security trade-off debate</p><p>17:20 - Should self-custody be made harder not easier</p><p>18:56 - Dice rolls versus RNG entropy disagreement</p><p>22:16 - Zach on how many people actually self-custody</p><p>26:14 - Priorities when choosing a hardware wallet</p><p>29:01 - Security as a journey not a destination</p><p>33:03 - Sponsor: Abundant Mines</p><p>36:00 - Why multi-vendor multi-sig should be the goal</p><p>41:25 - Source available versus fully open source explained</p><p>47:34 - Open source as required but not sufficient</p><p>51:11 - How to know if a wallet is actually safe</p><p>56:57 - Trezor fulfillment data leak disclosed August 10</p><p>1:03:49 - Private device purchases and local meetups</p><p>1:06:01 - Where to find each project online</p><p><br /></p><p>🔗 Links &amp; Resources:</p><p>→ SeedSigner: https://seedsigner.com</p><p>→ Foundation Passport: https://foundation.xyz/</p><p>→ Trezor: https://trezor.io</p><p>→ Blockstream Jade: https://blockstream.com/jade</p><p><br /></p><p>🔔 Subscribe for weekly Bitcoin Podcasts</p><p>🐦 Follow on X: https://x.com/BTCSessions</p><p>🐦 Follow on X: https://x.com/theBTCmentor</p><p><br /></p><p>⚡Sovereign Sessions — AI, Privacy, and Bitcoin education: http://youtube.com/@SovereignSessions?sub_confirmation=1</p><p><br /></p><p>💡BOOK Private Sessions with Nathan, Ben and the BTC Mentor Team: Master self-custody, hardware, multisig, Lightning, privacy, and more.</p><p> 👉 Visit btcmentor.io </p><p><br /></p><p>⚡ POWERED by Abundant Mines: Fully managed Bitcoin mining. Learn more at https://qrco.de/bgYKPB</p><p><br /></p><p>#Bitcoin #BTC #BTCSessions #BitcoinSelfCustody #ColdCard #ColdcardHack #BitcoinHack #HardwareWallet #MultiSig #SeedSigner #Trezor #Passport #BlockstreamJade #BitcoinSecurity #NotYourKeys #ZachHerbert #TomasSusanka</p>