Beyond the Code

• E81: MPC, Enclaves & Defense-in-Depth: Yehuda Lindell on Securing Crypto

  In this episode, Yitzy is joined by Yehuda Lindell—founder of Unbound Security (acquired by Coinbase), longtime professor and one of the earliest researchers in secure multiparty computation (MPC). We trace his journey from Australia to Israel and from theory to industry, then dive into how Coinbase secures customer assets using layered cryptography: MPC, secure enclaves, HSMs, cold elements, and rigorous review processes. Yehuda explains MPC in plain English (with a great DNA example), why “defense-in-depth” beats any single fortress, how insider threats are modeled, and what Coinbase’s production bar looks like. We also talk CS education in the age of AI, and why students should learn to program with AI rather than fear it. Yehuda closes with a pointer to CB-MPC, Coinbase’s open-source MPC engine, and a broader call for rigor when turning cryptography papers into production systems.Resources and Links:Yehuda on LI: https://www.linkedin.com/in/yehudalindell/ Yehuda on X: https://x.com/LindellYehudaCoinbase's CB-MPC library: https://github.com/coinbase/cb-mpc Timestamps:00:00 — Intro & Yehuda’s background05:43 — What is cryptography (for non-experts)16:00 — MPC 101 (privacy, correctness, shard thresholds)19:36 — Real-world key splitting; surviving full IT compromise23:38 — Coinbase’s defense-in-depth philosophy24:34 — What secure enclaves are (and side-channel realities)28:52 — Cold elements, cross-domain guards, layered participants31:31 — Coinbase’s production bar & independent reviews35:54 — CS, AI, and training “with” AI41:59 — CB-MPC and parting advice

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• E80: Steve Epstein on Post-Quantum Cybersecurity, Breaking RSA, and Saving Blockchains

  In this episode of Beyond the Code, Yitzy sits down with Steve Epstein — a distinguished systems/cybersecurity & AI engineer with roots at Bell Labs (alongside Peter Shor & Lov Grover), decades at NDS/Cisco/Synamedia, and currently working at Rafael, in Israel’s defense sector.Steve explains, in plain English, why quantum computing threatens today’s internet (RSA, ECDH, ECDSA), what Q-Day means, and when [it might be] coming, and how post-quantum cryptography (PQC) must be rolled out across clouds, hardware, supply chains, and especially blockchains.We cover the journey from satellite-TV smart cards and anti-piracy cat-and-mouse, to Netflix’s cloud migration and account-sharing detection (one of Steve’s 40–50 patents), to the stark reality of “harvest-now, decrypt-later”. Bottom line: crypto agility and PQC migration have to start now if we want banking, messaging, and crypto ledgers to survive the 2029–2035 Q-Day window.Topics & Timestamps00:00 Intro — who is Steven Epstein (Bell Labs → NDS/Cisco → Rafael; 40–50 patents)07:45 Smart cards, satellite TV security, and why hardware upgradability mattered12:20 Cloud era: Netflix, AWS, microservices — and the collapse of legacy pay-TV models18:45 Piracy at scale: finding and knocking down illegal streams (and why it barely works)23:30 Quantum 101: Shor’s algorithm, RSA/ECDH/ECDSA risk, Q-Day timelines31:40 PQC overview: Kyber, Dilithium, Falcon, SPHINCS+, HQC; crypto-agility in practice36:50 Harvest-now/decrypt-later and why blockchains are uniquely exposed41:50 Migration realities: cars, routers, military systems, supply chains47:30 What to do now: prioritize PQC for wallets, ledgers, key exchanges, and messaging

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• Roy Keidar at #BlockchainExpert25

  On September 15, 2025, Yitzy's crypto-centric lawfirm, DLT LAW, sponsored the Blockchain Expert conference in Airport City, Israel. During the conference, Yitzy recorded a series of interviews with entrepreneurs and legal professionals. In this conversation, Yitzy interviews Roy Keidar, a leading partner in Arnon Tadmor-Levy's Emerging Technologies and AI Department, about his journey in the blockchain and crypto space, his experiences with emerging technologies, and the integration of AI in legal practices. They discuss the rapid evolution of technology, the importance of curiosity, and the future of law in a tech-driven world.

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• E79: Jake Adelstein: The Devil Takes Bitcoin — Mt. Gox, Silk Road & Japan's [In]justice System

  In this episode, investigative journalist Jake Adelstein (Tokyo Vice) joins Yitzy to discuss his newly published book, The Devil Takes Bitcoin, a front-row narrative of the Mt. Gox collapse, where ~850k bitcoin went missing, and the cast of characters that shaped crypto’s formative years—from exchange founder Mark Karpelès to law-enforcement sleuths and the corrupt agents who derailed the Silk Road case. We trace Jake’s path from police beat reporting in Japan to human-trafficking investigations, dig into what Jake refers to as Japan's “hostage justice” system, and debate regulation vs. libertarian ideals in crypto. Enjoy!Links: Substack: Tokyo Paladin (Jake’s essays and investigations): https://tokyopaladin.substack.com/Wikipedia overview (bio, books, and TV adaptation of Tokyo Vice): ⁠https://en.wikipedia.org/wiki/Jake_AdelsteinBook: https://www.amazon.com/Devil-Takes-Bitcoin-Cryptocurrency-Connection/dp/1964992176X (Twitter): https://x.com/jakeadelsteinLinkedIn: https://www.linkedin.com/in/jakeadelstein/

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• 78: Jake Chervinsky on Crypto Law, Policy Battles, and Stablecoin Clarity

  In this episode, Yitzy sits down with Jake Chervinsky — currently Chief Legal Officer at Variant, and previously Chief Policy Officer at the Blockchain Association - one of the most recognizable voices in crypto law and policy. From his early days as a litigator at Baker McKenzie to his transition into crypto Twitter threads, DeFi, and policy advocacy in Washington, Jake’s journey offers an insider’s look at how law, innovation, and regulation collide.We cover:Jake’s path from mock trial competitions to Big Law and eventually into the heart of crypto;His move from courtroom litigation to becoming General Counsel at Compound Labs during the early DeFi boom;How a viral Bitcoin ETF Twitter thread shifted his career into crypto full-time;The behind-the-scenes fight over the 2021 infrastructure bill — and how it marked crypto’s arrival in Washington;Lessons from his time as Chief Policy Officer at the Blockchain Association during the FTX fallout;His current role at Variant, helping founders navigate the legal and regulatory minefields of building in Web3;Jake’s take on the future of stablecoins, the Clarity Act, and why “boring” regulation may actually be a win for the industry.Whether you’re a lawyer, builder, or policy wonk, this episode is packed with insights on how crypto regulation is shaped — and what’s coming next.🔗 Follow Jake on X: @jchervinsky

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