[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"node-by-slug-\u002Fen\u002Finsights\u002Fdown-the-rabbit-hole-will-our-secrets-survive-the-quantum-leap-en":3,"related-content-view":407},["Reactive",4],{"entity":5,"errors":-1},{"__typename":6,"status":7,"metatag":8,"id":202,"path":203,"title":204,"translations":205,"sharedHeaderRefMedia":213,"sharedTeaserTitle":13,"sharedTeaserText":240,"sharedTeaserRefMedia":242,"sharedParagraphs":244,"sharedTaxrefIndustries":366,"sharedTaxrefExpertises":370,"sharedIntroText":380,"sharedCtaLink":215,"sharedDate":382,"sharedAuthor":384},"NodeInsight",true,[9,14,18,21,25,30,34,38,42,46,50,54,58,62,66,69,73,76,79,81,84,87,91,95,99,103,107,111,115,119,123,127,131,135,139,142,145,148,151,154,157,160,163,166,170,174,177,181,185,189,192,196,200],{"tag":10,"attributes":11},"meta",{"name":12,"content":13},"title","Will our secrets survive the quantum leap?",{"tag":10,"attributes":15},{"name":16,"content":17},"description","Read the conversation between David Elliman and Dr Sarah McCarthy about the looming post-quantum era and how to ensure readiness well before Q-Day arrives.",{"tag":10,"attributes":19},{"name":20,"content":17},"abstract",{"tag":10,"attributes":22},{"name":23,"content":24},"icbm","51.525772, -0.082716",{"tag":26,"attributes":27},"link",{"rel":28,"href":29},"canonical","https:\u002F\u002Fcms.zuehlke.com\u002Fen\u002Finsights\u002Fdown-the-rabbit-hole-will-our-secrets-survive-the-quantum-leap",{"tag":10,"attributes":31},{"name":32,"content":33},"robots","index, follow",{"tag":26,"attributes":35},{"rel":36,"href":37},"shortlink","https:\u002F\u002Fcms.zuehlke.com\u002Fapi\u002Fgraphql",{"tag":26,"attributes":39},{"rel":40,"href":41},"image_src","https:\u002F\u002Fcms.zuehlke.com\u002Fsites\u002Fdefault\u002Ffiles\u002Fstyles\u002Fmax_1300x1300\u002Fpublic\u002Fimages\u002FDr_Sarah_McCarthy.png?itok=HCQ79Cqq,https:\u002F\u002Fcms.zuehlke.com\u002Fsites\u002Fdefault\u002Ffiles\u002Fimages\u002Fzuhlke_innovation_social.jpg",{"tag":10,"attributes":43},{"name":44,"content":45},"referrer","unsafe-url",{"tag":10,"attributes":47},{"name":48,"content":49},"rights","Copyright ©2026 | Zühlke Engineering AG | All rights reserved.",{"tag":10,"attributes":51},{"property":52,"content":53},"og:site_name","Zühlke Engineering AG",{"tag":10,"attributes":55},{"property":56,"content":57},"og:type","website",{"tag":10,"attributes":59},{"property":60,"content":61},"og:url","https:\u002F\u002Fwww.zuehlke.com\u002Fen\u002Finsights\u002Fdown-the-rabbit-hole-will-our-secrets-survive-the-quantum-leap",{"tag":10,"attributes":63},{"property":64,"content":65},"og:title","Will our secrets survive the quantum leap? – Zühlke",{"tag":10,"attributes":67},{"property":68,"content":17},"og:description",{"tag":10,"attributes":70},{"property":71,"content":72},"og:image","https:\u002F\u002Fcms.zuehlke.com\u002Fsites\u002Fdefault\u002Ffiles\u002Fstyles\u002Fmax_1300x1300\u002Fpublic\u002Fimages\u002FDr_Sarah_McCarthy.png?itok=HCQ79Cqq",{"tag":10,"attributes":74},{"property":71,"content":75},"https:\u002F\u002Fcms.zuehlke.com\u002Fsites\u002Fdefault\u002Ffiles\u002Fimages\u002Fzuhlke_innovation_social.jpg",{"tag":10,"attributes":77},{"property":78,"content":72},"og:image:url",{"tag":10,"attributes":80},{"property":78,"content":75},{"tag":10,"attributes":82},{"property":83,"content":72},"og:image:secure_url",{"tag":10,"attributes":85},{"property":83,"content":86},"https:\u002F\u002Fwww.zuehlke.com\u002Fsites\u002Fdefault\u002Ffiles\u002Fimages\u002Fzuhlke_innovation_social.jpg",{"tag":10,"attributes":88},{"property":89,"content":90},"og:image:alt","image",{"tag":10,"attributes":92},{"property":93,"content":94},"og:updated_time","2026-05-06",{"tag":10,"attributes":96},{"property":97,"content":98},"place:location:longitude","7.438014",{"tag":10,"attributes":100},{"property":101,"content":102},"place:location:latitude","46.947944",{"tag":10,"attributes":104},{"property":105,"content":106},"og:street_address","80 Great Eastern Street",{"tag":10,"attributes":108},{"property":109,"content":110},"og:locality","London",{"tag":10,"attributes":112},{"property":113,"content":114},"og:region","England",{"tag":10,"attributes":116},{"property":117,"content":118},"og:postal_code","EC2A 3JL",{"tag":10,"attributes":120},{"property":121,"content":122},"og:country_name","United Kingdom",{"tag":10,"attributes":124},{"property":125,"content":126},"og:email","london@zuhlke.com",{"tag":10,"attributes":128},{"property":129,"content":130},"og:phone_number","+44 20 7113 5000",{"tag":10,"attributes":132},{"property":133,"content":134},"og:locale","en_CH",{"tag":10,"attributes":136},{"property":137,"content":138},"og:locale:alternate","de_CH",{"tag":10,"attributes":140},{"property":137,"content":141},"de_DE",{"tag":10,"attributes":143},{"property":137,"content":144},"en_DE",{"tag":10,"attributes":146},{"property":137,"content":147},"en_AT",{"tag":10,"attributes":149},{"property":137,"content":150},"de_AT",{"tag":10,"attributes":152},{"property":137,"content":153},"en_HK",{"tag":10,"attributes":155},{"property":137,"content":156},"en_SR",{"tag":10,"attributes":158},{"property":137,"content":159},"en_BG",{"tag":10,"attributes":161},{"property":137,"content":162},"en_SG",{"tag":10,"attributes":164},{"property":137,"content":165},"en_GB",{"tag":10,"attributes":167},{"property":168,"content":169},"article:publisher","https:\u002F\u002Fwww.facebook.com\u002Fzuehlke.group",{"tag":10,"attributes":171},{"property":172,"content":173},"article:published_time","2025-12-11",{"tag":10,"attributes":175},{"property":176,"content":94},"article:modified_time",{"tag":10,"attributes":178},{"name":179,"content":180},"twitter:card","summary_large_image",{"tag":10,"attributes":182},{"name":183,"content":184},"twitter:site","@zuehlke_group",{"tag":10,"attributes":186},{"name":187,"content":188},"twitter:site:id","247189965",{"tag":10,"attributes":190},{"name":191,"content":90},"twitter:image:alt",{"tag":10,"attributes":193},{"name":194,"content":195},"twitter:image","https:\u002F\u002Fcms.zuehlke.com\u002Fsites\u002Fdefault\u002Ffiles\u002Fstyles\u002Fmax_1300x1300\u002Fpublic\u002Fimages\u002FDr_Sarah_McCarthy.png?itok=HCQ79Cqq,https:\u002F\u002Fwww.zuehlke.com\u002Fsites\u002Fdefault\u002Ffiles\u002Fimages\u002Fzuhlke_innovation_social.jpg",{"tag":10,"attributes":197},{"name":198,"content":199},"google-site-verification","VEzolc1Vxy1KyRIlIqUSmVS7fqP_3_ZeBqPRby4g2mE",{"tag":201},"script","26856","\u002Fen\u002Finsights\u002Fdown-the-rabbit-hole-will-our-secrets-survive-the-quantum-leap","Down the rabbit hole: Will our secrets survive the quantum leap?",[206,209],{"path":203,"langcode":207},{"id":208},"en",{"path":210,"langcode":211},"\u002Fde\u002Finsights\u002Fhinab-in-den-kaninchenbau-werden-unsere-geheimnisse-den-quantensprung-ueberleben",{"id":212},"de",{"id":214,"sharedMediaLegend":215,"mediaImage":216,"name":239},"172645",null,{"url":217,"width":218,"height":219,"alt":220,"title":215,"size":221,"mime":222,"variations":215,"headerMinimalVariations":223},"https:\u002F\u002Fcms.zuehlke.com\u002Fsites\u002Fdefault\u002Ffiles\u002Fimages\u002FDr_Sarah_McCarthy.png",1280,720,"Podcast promotional graphic featuring a woman with long blonde hair, labelled ‘Dr Sarah McCarthy’, alongside the title ‘Tech Tomorrow with David Elliman’ on a vibrant purple and blue background.",1939537,"image\u002Fpng",[224,229,230,235,238],{"name":225,"url":226,"width":227,"height":228},"FOCAL_POINT32_SMALL","https:\u002F\u002Fcms.zuehlke.com\u002Fsites\u002Fdefault\u002Ffiles\u002Fstyles\u002Ffocal_point_3_2_small\u002Fpublic\u002Fimages\u002FDr_Sarah_McCarthy.png.webp?itok=t6SWtNYd",800,533,{"name":225,"url":226,"width":227,"height":228},{"name":231,"url":232,"width":233,"height":234},"FOCAL_POINT169_MEDIUM","https:\u002F\u002Fcms.zuehlke.com\u002Fsites\u002Fdefault\u002Ffiles\u002Fstyles\u002Ffocal_point_16_9_medium\u002Fpublic\u002Fimages\u002FDr_Sarah_McCarthy.png.webp?itok=EJZtjj-B",1200,675,{"name":236,"url":237,"width":218,"height":219},"FOCAL_POINT169_LARGE","https:\u002F\u002Fcms.zuehlke.com\u002Fsites\u002Fdefault\u002Ffiles\u002Fstyles\u002Ffocal_point_16_9_large\u002Fpublic\u002Fimages\u002FDr_Sarah_McCarthy.png.webp?itok=i1Yq2W2S",{"name":236,"url":237,"width":218,"height":219},"Dr_Sarah_McCarthy.png",{"processed":241},"\u003Cp>Read the conversation between David Elliman and Dr Sarah McCarthy about the looming post-quantum era and how to ensure readiness well before Q-Day arrives.\u003C\u002Fp>",{"id":214,"sharedMediaLegend":215,"mediaImage":243,"name":239},{"url":217,"width":218,"height":219,"alt":220,"title":215,"size":221,"mime":222,"variations":215},[245,252,259,265,271,281,286,327,332,339],{"__typename":246,"id":247,"pgEmbededCode":248,"fullWidth":251,"edgeToEdge":251},"ParagraphPgCustomCode","33642",{"value":249,"processed":249,"format":250},"\u003Ciframe width=\"100%\" height=\"180\" frameborder=\"no\" scrolling=\"no\" seamless=\"\" src=\"https:\u002F\u002Fshare.transistor.fm\u002Fe\u002Faac8757c\">\u003C\u002Fiframe>","custom_code",false,{"__typename":253,"id":254,"ctaLink":215,"pgSharedText":255,"pgSharedTitle":215,"pgSharedCtaLink":215},"ParagraphPgText","33641",{"value":256,"processed":257,"format":258},"\u003Cp>Quantum computing is edging closer to commercial reality, and with it comes a fundamental challenge to the cryptographic systems that underpin global trust.\u003C\u002Fp>\u003Cp>The same machines capable of accelerating drug discovery and climate modelling could, in time, dismantle the encryption that protects financial systems, healthcare data, national infrastructure and the digital signatures that keep global commerce functioning.\u003C\u002Fp>\u003Cp>In this episode of \u003Ca href=\"\u002Fnode\u002F26709\" title=\"Discover all episodes of the Tech Tomorrow podcast\" data-entity-type=\"node\" data-entity-uuid=\"94f2836b-1d26-43d8-8630-29aaa98f52dc\" data-entity-substitution=\"canonical\">Tech Tomorrow\u003C\u002Fa>, Zühlke’s David Elliman speaks with Dr Sarah McCarthy to explore a question every business leader should be asking: are we prepared for a world where today’s secrets can be tomorrow’s open books?\u003C\u002Fp>","\u003Cp>Quantum computing is edging closer to commercial reality, and with it comes a fundamental challenge to the cryptographic systems that underpin global trust.\u003C\u002Fp>\u003Cp>The same machines capable of accelerating drug discovery and climate modelling could, in time, dismantle the encryption that protects financial systems, healthcare data, national infrastructure and the digital signatures that keep global commerce functioning.\u003C\u002Fp>\u003Cp>In this episode of \u003Ca href=\"\u002Fen\u002Finsights\u002Ftech-tomorrow-podcast\" title=\"Discover all episodes of the Tech Tomorrow podcast\" data-entity-type=\"node\" data-entity-uuid=\"94f2836b-1d26-43d8-8630-29aaa98f52dc\" data-entity-substitution=\"canonical\">Tech Tomorrow\u003C\u002Fa>, Zühlke’s David Elliman speaks with Dr Sarah McCarthy to explore a question every business leader should be asking: are we prepared for a world where today’s secrets can be tomorrow’s open books?\u003C\u002Fp>","full_html",{"__typename":253,"id":260,"ctaLink":215,"pgSharedText":261,"pgSharedTitle":264,"pgSharedCtaLink":215},"33643",{"value":262,"processed":263,"format":258},"\u003Cp>\u003Ca href=\"https:\u002F\u002Fwww.cryptomccarthy.com\u002F\" target=\"_blank\" title=\"Visit Dr Sarah McCarthy's website\" data-entity-type=\"external\">Dr Sarah McCarthy\u003C\u002Fa> began her career in pure mathematics before moving into the world of applied cryptography.\u003C\u002Fp>\u003Cp>Today she is the Quantum Readiness Programme Lead at \u003Ca href=\"https:\u002F\u002Fwww.citi.com\u002F\" title=\"Visit Citi's website\" data-entity-type=\"external\">Citi\u003C\u002Fa>, helping one of the world’s largest financial institutions prepare for the next era of cyber risk. She specialises in making sense of a world “where logic bends,” as she puts it, and where conventional security can fail overnight.\u003C\u002Fp>","\u003Cp>\u003Ca href=\"https:\u002F\u002Fwww.cryptomccarthy.com\u002F\" target=\"_blank\" title=\"Visit Dr Sarah McCarthy's website\" data-entity-type=\"external\">Dr Sarah McCarthy\u003C\u002Fa> began her career in pure mathematics before moving into the world of applied cryptography.\u003C\u002Fp>\u003Cp>Today she is the Quantum Readiness Programme Lead at \u003Ca href=\"https:\u002F\u002Fwww.citi.com\u002F\" title=\"Visit Citi's website\" data-entity-type=\"external\">Citi\u003C\u002Fa>, helping one of the world’s largest financial institutions prepare for the next era of cyber risk. She specialises in making sense of a world “where logic bends,” as she puts it, and where conventional security can fail overnight.\u003C\u002Fp>","Meet the guest: Dr Sarah McCarthy",{"__typename":253,"id":266,"ctaLink":215,"pgSharedText":267,"pgSharedTitle":270,"pgSharedCtaLink":215},"33644",{"value":268,"processed":269,"format":258},"\u003Ch3>Why quantum computing changes the rules\u003C\u002Fh3>\u003Cp>At the heart of the threat is a property unique to quantum mechanics: superposition. While classical bits switch between 0 and 1, a quantum bit (the qubit) can represent both simultaneously. “Like the Cheshire Cat,” Dr McCarthy notes, “a qubit can exist in two states at once,” enabling quantum machines to explore vast mathematical possibilities in parallel.  \u003C\u002Fp>\u003Cp>The implications are profound. Many of the cryptographic systems that secure digital communication, online banking, and identity verification rely on mathematical problems that would take classical computers millions of years to solve. Quantum computers could solve them in hours or even minutes.\u003C\u002Fp>\u003Ch3>The Red Queen reality: Security that must keep running just to stand still\u003C\u002Fh3>\u003Cp>In Through the Looking Glass, Alice runs as fast as she can only to stay in the same place. Dr McCarthy says this perfectly captures \u003Ca href=\"\u002Fnode\u002F26325\" title=\"Discover the cybersecurity trends for 2025\" data-entity-type=\"node\" data-entity-uuid=\"bda6086f-ce1e-4fbc-ac76-abf37833cffd\" data-entity-substitution=\"canonical\">the reality of modern cybersecurity\u003C\u002Fa>.\u003C\u002Fp>","\u003Ch3>Why quantum computing changes the rules\u003C\u002Fh3>\u003Cp>At the heart of the threat is a property unique to quantum mechanics: superposition. While classical bits switch between 0 and 1, a quantum bit (the qubit) can represent both simultaneously. “Like the Cheshire Cat,” Dr McCarthy notes, “a qubit can exist in two states at once,” enabling quantum machines to explore vast mathematical possibilities in parallel.  \u003C\u002Fp>\u003Cp>The implications are profound. Many of the cryptographic systems that secure digital communication, online banking, and identity verification rely on mathematical problems that would take classical computers millions of years to solve. Quantum computers could solve them in hours or even minutes.\u003C\u002Fp>\u003Ch3>The Red Queen reality: Security that must keep running just to stand still\u003C\u002Fh3>\u003Cp>In Through the Looking Glass, Alice runs as fast as she can only to stay in the same place. Dr McCarthy says this perfectly captures \u003Ca href=\"\u002Fen\u002Finsights\u002Fcybersecurity-trends-2025-the-challenges-that-will-shape-the-future\" title=\"Discover the cybersecurity trends for 2025\" data-entity-type=\"node\" data-entity-uuid=\"bda6086f-ce1e-4fbc-ac76-abf37833cffd\" data-entity-substitution=\"canonical\">the reality of modern cybersecurity\u003C\u002Fa>.\u003C\u002Fp>","Key takeaways from the episode",{"__typename":272,"id":273,"eyebrow":215,"pgQuoteRefQuote":274,"hideImage":251,"hideFunctionAndCompany":251,"bigQuote":251},"ParagraphPgQuote","33645",[275],{"status":7,"id":276,"promote":251,"quotePersonDesc":277,"quotePersonName":278,"quoteText":279,"profileImage":215,"title":280},"26854","Quantum Readiness Programme Lead at Citi","Dr Sarah McCarthy","Attacks are continuously evolving. Not just from quantum computing, but from new cryptanalysis and side-channel techniques. You can’t plan for post-quantum cryptography once and forget about it. Security is a moving target.","Tech Tomorrow Podcast: Dr Sarah McCarthy 1",{"__typename":253,"id":282,"ctaLink":215,"pgSharedText":283,"pgSharedTitle":215,"pgSharedCtaLink":215},"33646",{"value":284,"processed":285,"format":258},"\u003Cp>Even before a viable quantum computer arrives, organisations must continuously update, experiment, and train. Cryptography isn’t a one-off investment, but really an ongoing race.\u003C\u002Fp>\u003Ch3>What is cryptographic agility (and why does it matter)?\u003C\u002Fh3>\u003Cp>When the landscape changes this fast, flexibility becomes a superpower.\u003C\u002Fp>\u003Cp>“Cryptographic agility,” says Dr McCarthy, “is like Alice navigating Wonderland: she has to adapt to growing, shrinking, and shifting paths. Organisations must be able to swap out cryptographic components, adjust protocols, and stay ahead of new threats.”\u003C\u002Fp>\u003Cp>The best approach today is a hybrid model: combining classical encryption with post-quantum algorithms. If one layer fails, the other holds. This dual system creates a safety net: a pragmatic bridge between today’s systems and tomorrow’s standards.\u003C\u002Fp>\u003Ch3>The invisible threat already underway\u003C\u002Fh3>\u003Cp>Perhaps the most urgent challenge is one many leaders underestimate: “harvest now, decrypt later.”\u003C\u002Fp>\u003Cp>Adversaries are already collecting encrypted data, storing it, and waiting for quantum capability to mature. Long-lived data such as financial transactions, medical records, intellectual property and government communications will still carry value in a decade. If it is intercepted today, it could be decrypted tomorrow.  \u003C\u002Fp>\u003Cp>The same applies to digital signatures. In a quantum-enabled world, they could be forged retroactively, altering records or undermining historical agreements.\u003C\u002Fp>\u003Ch3>Why leaders must act before Q-Day\u003C\u002Fh3>\u003Cp>“Q-Day” — the moment when quantum computers can break existing cryptography — could be ten to fifteen years away, or closer. No one really knows. And, as Dr McCarthy points out, it may already have happened before we notice.\u003C\u002Fp>\u003Cp>“A hostile nation state isn’t going to announce they’ve built a cryptographically relevant quantum computer,” she says. “By the time we find out, it’ll be too late.”\u003C\u002Fp>\u003Cp>\u003Cstrong>The lesson is clear: \u003C\u002Fstrong>\u003Ca href=\"\u002Fnode\u002F7518\" title=\"Learn more about why you should prepare for Q-Day now\" data-entity-type=\"node\" data-entity-uuid=\"a0ef7bf9-bcc6-4c98-a0fb-3718385498c6\" data-entity-substitution=\"canonical\">\u003Cstrong>don’t wait for Q-Day to act\u003C\u002Fstrong>\u003C\u002Fa>\u003Cstrong>.\u003C\u002Fstrong>\u003C\u002Fp>\u003Cp>Early adopters of post-quantum security gain three advantages:\u003C\u002Fp>\u003Cul>\u003Cli>Resilience: Data that stays secure for decades.\u003C\u002Fli>\u003Cli>Regulatory readiness: Avoiding fines as compliance frameworks evolve.\u003C\u002Fli>\u003Cli>Reputation: Earning trust as a forward-looking, secure partner. \u003C\u002Fli>\u003C\u002Ful>","\u003Cp>Even before a viable quantum computer arrives, organisations must continuously update, experiment, and train. Cryptography isn’t a one-off investment, but really an ongoing race.\u003C\u002Fp>\u003Ch3>What is cryptographic agility (and why does it matter)?\u003C\u002Fh3>\u003Cp>When the landscape changes this fast, flexibility becomes a superpower.\u003C\u002Fp>\u003Cp>“Cryptographic agility,” says Dr McCarthy, “is like Alice navigating Wonderland: she has to adapt to growing, shrinking, and shifting paths. Organisations must be able to swap out cryptographic components, adjust protocols, and stay ahead of new threats.”\u003C\u002Fp>\u003Cp>The best approach today is a hybrid model: combining classical encryption with post-quantum algorithms. If one layer fails, the other holds. This dual system creates a safety net: a pragmatic bridge between today’s systems and tomorrow’s standards.\u003C\u002Fp>\u003Ch3>The invisible threat already underway\u003C\u002Fh3>\u003Cp>Perhaps the most urgent challenge is one many leaders underestimate: “harvest now, decrypt later.”\u003C\u002Fp>\u003Cp>Adversaries are already collecting encrypted data, storing it, and waiting for quantum capability to mature. Long-lived data such as financial transactions, medical records, intellectual property and government communications will still carry value in a decade. If it is intercepted today, it could be decrypted tomorrow.  \u003C\u002Fp>\u003Cp>The same applies to digital signatures. In a quantum-enabled world, they could be forged retroactively, altering records or undermining historical agreements.\u003C\u002Fp>\u003Ch3>Why leaders must act before Q-Day\u003C\u002Fh3>\u003Cp>“Q-Day” — the moment when quantum computers can break existing cryptography — could be ten to fifteen years away, or closer. No one really knows. And, as Dr McCarthy points out, it may already have happened before we notice.\u003C\u002Fp>\u003Cp>“A hostile nation state isn’t going to announce they’ve built a cryptographically relevant quantum computer,” she says. “By the time we find out, it’ll be too late.”\u003C\u002Fp>\u003Cp>\u003Cstrong>The lesson is clear: \u003C\u002Fstrong>\u003Ca href=\"\u002Fen\u002Finsights\u002Fquantum-computing-and-cybersecurity-why-its-time-to-prepare-now\" title=\"Learn more about why you should prepare for Q-Day now\" data-entity-type=\"node\" data-entity-uuid=\"a0ef7bf9-bcc6-4c98-a0fb-3718385498c6\" data-entity-substitution=\"canonical\">\u003Cstrong>don’t wait for Q-Day to act\u003C\u002Fstrong>\u003C\u002Fa>\u003Cstrong>.\u003C\u002Fstrong>\u003C\u002Fp>\u003Cp>Early adopters of post-quantum security gain three advantages:\u003C\u002Fp>\u003Cul>\u003Cli>Resilience: Data that stays secure for decades.\u003C\u002Fli>\u003Cli>Regulatory readiness: Avoiding fines as compliance frameworks evolve.\u003C\u002Fli>\u003Cli>Reputation: Earning trust as a forward-looking, secure partner. \u003C\u002Fli>\u003C\u002Ful>",{"__typename":287,"id":288,"title":289,"lead":290,"tabs":291},"ParagraphTab","33657","A practical roadmap for executives","Quantum readiness is not about panic. It is about structured preparation. Dr McCarthy outlines five practical steps leaders can begin now:",[292,299,306,313,320],{"infoText":293,"pgSharedParagraphs":294},"1. Map your cryptography",[295],{"id":296,"ctaLink":215,"pgSharedText":297,"pgSharedTitle":293,"pgSharedCtaLink":215},"33647",{"value":298,"processed":298,"format":258},"\u003Cp>Most organisations do not know where their cryptography lives. Start by inventorying algorithms, certificates, embedded libraries and key-management systems — especially in legacy environments.\u003C\u002Fp>",{"infoText":300,"pgSharedParagraphs":301},"2. Prioritise long-lived, high-value data",[302],{"id":303,"ctaLink":215,"pgSharedText":304,"pgSharedTitle":300,"pgSharedCtaLink":215},"33649",{"value":305,"processed":305,"format":258},"\u003Cp>Focus first on information that must remain secure for decades: sensitive contracts, medical data, financial records, legal archives, identity systems.\u003C\u002Fp>",{"infoText":307,"pgSharedParagraphs":308},"3. Engage your ecosystem",[309],{"id":310,"ctaLink":215,"pgSharedText":311,"pgSharedTitle":307,"pgSharedCtaLink":215},"33651",{"value":312,"processed":312,"format":258},"\u003Cp>Quantum migration will rely on shared standards and coordinated timelines. Collaborate with partners, vendors and industry groups to avoid misaligned upgrades and weak links.\u003C\u002Fp>",{"infoText":314,"pgSharedParagraphs":315},"4. Build for agility",[316],{"id":317,"ctaLink":215,"pgSharedText":318,"pgSharedTitle":314,"pgSharedCtaLink":215},"33653",{"value":319,"processed":319,"format":258},"\u003Cp>Architect systems so components can be swapped without full system redesign. Hybrid cryptography offers a pragmatic interim safeguard.\u003C\u002Fp>",{"infoText":321,"pgSharedParagraphs":322},"5. Invest in awareness and experimentation",[323],{"id":324,"ctaLink":215,"pgSharedText":325,"pgSharedTitle":321,"pgSharedCtaLink":215},"33655",{"value":326,"processed":326,"format":258},"\u003Cp>Budgets for training, pilot programmes and scenario planning are essential. Quantum readiness is partly technical, but largely cultural.\u003C\u002Fp>",{"__typename":253,"id":328,"ctaLink":215,"pgSharedText":329,"pgSharedTitle":215,"pgSharedCtaLink":215},"33658",{"value":330,"processed":331,"format":258},"\u003Ch3>What we can learn from early pioneers\u003C\u002Fh3>\u003Cp>A number of organisations have already begun their journey through the quantum looking glass:  \u003C\u002Fp>\u003Cul>\u003Cli>Cloudflare deploys hybrid post-quantum cryptography within TLS 1.3 by default, protecting millions of secure connections.\u003C\u002Fli>\u003Cli>Central banks are experimenting with post-quantum encryption for cross-border payment systems and secure communications.\u003C\u002Fli>\u003Cli>Hardware vendors are creating post-quantum-enabled security modules compatible with existing infrastructure.\u003C\u002Fli>\u003C\u002Ful>\u003Cp>These \u003Ca href=\"\u002Fnode\u002F26167\" title=\"See an example in first-hand: our partnership with InfoSec Global\" data-entity-type=\"node\" data-entity-uuid=\"be2c8a18-f264-45dc-afa0-e00b8d40341f\" data-entity-substitution=\"canonical\">early movers\u003C\u002Fa> demonstrate that quantum-resilient systems are not futuristic — they are operational today.\u003C\u002Fp>\u003Ch3>Beyond the rabbit hole: a pragmatic optimism\u003C\u002Fh3>\u003Cp>Quantum computing will not collapse cybersecurity overnight. But it will rewrite the assumptions on which digital trust is built. The organisations that act early — those that inventory their cryptography, strengthen their architectures and build true agility — will shape the next generation of digital standards.\u003C\u002Fp>\u003Cp>As Dr McCarthy concludes:\u003C\u002Fp>","\u003Ch3>What we can learn from early pioneers\u003C\u002Fh3>\u003Cp>A number of organisations have already begun their journey through the quantum looking glass:  \u003C\u002Fp>\u003Cul>\u003Cli>Cloudflare deploys hybrid post-quantum cryptography within TLS 1.3 by default, protecting millions of secure connections.\u003C\u002Fli>\u003Cli>Central banks are experimenting with post-quantum encryption for cross-border payment systems and secure communications.\u003C\u002Fli>\u003Cli>Hardware vendors are creating post-quantum-enabled security modules compatible with existing infrastructure.\u003C\u002Fli>\u003C\u002Ful>\u003Cp>These \u003Ca href=\"\u002Fen\u002Fabout-us\u002Fnews\u002Fpost-quantum-cybersecurity-new-partnership-with-infosec-global\" title=\"See an example in first-hand: our partnership with InfoSec Global\" data-entity-type=\"node\" data-entity-uuid=\"be2c8a18-f264-45dc-afa0-e00b8d40341f\" data-entity-substitution=\"canonical\">early movers\u003C\u002Fa> demonstrate that quantum-resilient systems are not futuristic — they are operational today.\u003C\u002Fp>\u003Ch3>Beyond the rabbit hole: a pragmatic optimism\u003C\u002Fh3>\u003Cp>Quantum computing will not collapse cybersecurity overnight. But it will rewrite the assumptions on which digital trust is built. The organisations that act early — those that inventory their cryptography, strengthen their architectures and build true agility — will shape the next generation of digital standards.\u003C\u002Fp>\u003Cp>As Dr McCarthy concludes:\u003C\u002Fp>",{"__typename":272,"id":333,"eyebrow":215,"pgQuoteRefQuote":334,"hideImage":251,"hideFunctionAndCompany":251,"bigQuote":251},"33659",[335],{"status":7,"id":336,"promote":251,"quotePersonDesc":277,"quotePersonName":278,"quoteText":337,"profileImage":215,"title":338},"26855","Quantum computing won’t instantly break today’s security, but it forces us to rethink our long-lived systems. The organisations that inventory their cryptography, identify the high risk use cases, and adopt crypto agile architectures, are the ones who'll be able to transition the most smoothly.","Tech Tomorrow Podcast: Dr Sarah McCarthy 2",{"__typename":340,"id":341,"title":342,"text":343,"pgCtaLink":344,"imageLayout":347,"media":348},"ParagraphPgTeaserBig","35027","Discover all Tech Tomorrow episodes","Tech Tomorrow is your front-row seat to the conversations redefining the future. Each episode explores one big question about data, AI, or emerging tech, giving leaders clear, focused answers they can trust.",{"title":345,"url":346,"internal":7},"Explore all episodes","\u002Fen\u002Finsights\u002Ftech-tomorrow-podcast","left",{"id":349,"sharedMediaLegend":215,"mediaImage":350,"name":365},"173199",{"url":351,"width":352,"height":352,"alt":353,"title":215,"size":354,"mime":222,"variations":215,"teaserVariations":355},"https:\u002F\u002Fcms.zuehlke.com\u002Fsites\u002Fdefault\u002Ffiles\u002Fimages\u002Ftech_tomorrow_teaser_blogs.png",1080,"Tech Tomorrow podcast thumbnail featuring host David Elliman smiling inside a circular frame on a purple and blue abstract background, with the text “Tech Tomorrow with David Elliman” displayed on the right.",3077352,[356,358,359,363,364],{"name":225,"url":357,"width":227,"height":228},"https:\u002F\u002Fcms.zuehlke.com\u002Fsites\u002Fdefault\u002Ffiles\u002Fstyles\u002Ffocal_point_3_2_small\u002Fpublic\u002Fimages\u002Ftech_tomorrow_teaser_blogs.png.webp?itok=_fFx-z4d",{"name":225,"url":357,"width":227,"height":228},{"name":360,"url":361,"width":352,"height":362},"FOCAL_POINT54_MEDIUM","https:\u002F\u002Fcms.zuehlke.com\u002Fsites\u002Fdefault\u002Ffiles\u002Fstyles\u002Ffocal_point_5_4_medium\u002Fpublic\u002Fimages\u002Ftech_tomorrow_teaser_blogs.png.webp?itok=IjFixnwC",864,{"name":360,"url":361,"width":352,"height":362},{"name":360,"url":361,"width":352,"height":362},"tech_tomorrow_teaser_blogs.png",[367],{"id":368,"name":369},"855","All industries",[371,374,377],{"id":372,"name":373},"125","Cybersecurity",{"id":375,"name":376},"891","New technologies",{"id":378,"name":379},"1188","Quantum computing",{"processed":381},"\u003Cp>In this special Alice in Wonderland-themed episode of Tech Tomorrow, David Elliman speaks with Dr Sarah McCarthy to explore the looming post-quantum era.\u003C\u002Fp>\n",{"timestamp":383},1765454400,[385],{"status":7,"contactName":386,"contactProfession":387,"contactLinkedinUrl":388,"sharedEmail":391,"sharedRefMedia":392},"David Elliman","Global Chief of Software Engineering",{"title":389,"url":390,"internal":251},"","https:\u002F\u002Fwww.linkedin.com\u002Fin\u002Felliman\u002F","david.elliman@zuhlke.com",{"id":393,"sharedMediaLegend":215,"mediaImage":394,"name":406},"167342",{"url":395,"width":227,"height":227,"alt":386,"title":215,"size":396,"mime":397,"variations":215,"authorVariations":398},"https:\u002F\u002Fcms.zuehlke.com\u002Fsites\u002Fdefault\u002Ffiles\u002Fimages\u002Fdavid-elliman_0.jpeg",100830,"image\u002Fjpeg",[399,402,403,404,405],{"name":400,"url":401,"width":227,"height":227},"FOCAL_POINT11_SMALL","https:\u002F\u002Fcms.zuehlke.com\u002Fsites\u002Fdefault\u002Ffiles\u002Fstyles\u002Ffocal_point_1_1_small\u002Fpublic\u002Fimages\u002Fdavid-elliman_0.jpeg.webp?itok=KqGd6fb7",{"name":400,"url":401,"width":227,"height":227},{"name":400,"url":401,"width":227,"height":227},{"name":400,"url":401,"width":227,"height":227},{"name":400,"url":401,"width":227,"height":227},"david-elliman.jpeg",{"data":408},{"relatedContentView":409},{"id":410,"pageInfo":411,"results":414},"3dad2dac-900c-48b3-9380-0814b1c1f4f1",{"page":412,"pageSize":413,"total":413},0,3,[415,456,482],{"id":416,"path":417,"sharedTeaserTitle":418,"sharedTeaserRefMedia":419,"sharedTaxrefIndustries":437,"sharedTaxrefExpertises":454},"26386","\u002Fen\u002Finsights\u002Fhong-kongs-new-cybersecurity-bill-what-does-it-mean-for-cios-and-cisos","Hong Kong's new cybersecurity bill: what does it mean?",{"id":420,"sharedMediaLegend":215,"mediaImage":421,"name":436},"171406",{"url":422,"width":423,"height":424,"alt":425,"title":215,"size":426,"mime":397,"variations":215,"relatedContentVariations":427},"https:\u002F\u002Fcms.zuehlke.com\u002Fsites\u002Fdefault\u002Ffiles\u002Fimages\u002FSunrise%20over%20Victoria%20Harbor.jpg",3000,2000,"\"\"",2019287,[428,430,431,434,435],{"name":225,"url":429,"width":227,"height":228},"https:\u002F\u002Fcms.zuehlke.com\u002Fsites\u002Fdefault\u002Ffiles\u002Fstyles\u002Ffocal_point_3_2_small\u002Fpublic\u002Fimages\u002FSunrise%20over%20Victoria%20Harbor.jpg.webp?itok=z-2MiXiE",{"name":225,"url":429,"width":227,"height":228},{"name":432,"url":433,"width":233,"height":227},"FOCAL_POINT32_MEDIUM","https:\u002F\u002Fcms.zuehlke.com\u002Fsites\u002Fdefault\u002Ffiles\u002Fstyles\u002Ffocal_point_3_2_medium\u002Fpublic\u002Fimages\u002FSunrise%20over%20Victoria%20Harbor.jpg.webp?itok=E81HapC5",{"name":432,"url":433,"width":233,"height":227},{"name":432,"url":433,"width":233,"height":227},"Sunrise over Victoria Harbor.jpg",[438,441,444,447,450,453],{"id":439,"name":440},"7","Banking",{"id":442,"name":443},"709","Energy & utilities",{"id":445,"name":446},"120","Government & public sector",{"id":448,"name":449},"11","Insurance",{"id":451,"name":452},"15","Transport",{"id":368,"name":369},[455],{"id":372,"name":373},{"id":457,"path":458,"sharedTeaserTitle":459,"sharedTeaserRefMedia":460,"sharedTaxrefIndustries":478,"sharedTaxrefExpertises":480},"755","\u002Fen\u002Finsights\u002Fhow-to-defend-against-cyber-attacks-in-open-banking-environments","Defend against cyber attacks in open banking environments",{"id":461,"sharedMediaLegend":215,"mediaImage":462,"name":477},"5448",{"url":463,"width":464,"height":465,"alt":466,"title":215,"size":467,"mime":397,"variations":215,"relatedContentVariations":468},"https:\u002F\u002Fcms.zuehlke.com\u002Fsites\u002Fdefault\u002Ffiles\u002Fimages\u002Fraphael-reischuk-portrait.jpg",400,259,"Raphael Reischuk Portrait",28620,[469,472,473,475,476],{"name":225,"url":470,"width":471,"height":465},"https:\u002F\u002Fcms.zuehlke.com\u002Fsites\u002Fdefault\u002Ffiles\u002Fstyles\u002Ffocal_point_3_2_small\u002Fpublic\u002Fimages\u002Fraphael-reischuk-portrait.jpg.webp?itok=fP8M0qY1",389,{"name":225,"url":470,"width":471,"height":465},{"name":432,"url":474,"width":471,"height":465},"https:\u002F\u002Fcms.zuehlke.com\u002Fsites\u002Fdefault\u002Ffiles\u002Fstyles\u002Ffocal_point_3_2_medium\u002Fpublic\u002Fimages\u002Fraphael-reischuk-portrait.jpg.webp?itok=fbvKN7uG",{"name":432,"url":474,"width":471,"height":465},{"name":432,"url":474,"width":471,"height":465},"raphael-reischuk-portrait.jpg",[479],{"id":439,"name":440},[481],{"id":372,"name":373},{"id":483,"path":484,"sharedTeaserTitle":485,"sharedTeaserRefMedia":486,"sharedTaxrefIndustries":503,"sharedTaxrefExpertises":505},"6387","\u002Fen\u002Finsights\u002Fstaying-ahead-of-the-race-drivers-for-cybersecurity","Staying ahead of the race – Drivers for cybersecurity",{"id":487,"sharedMediaLegend":215,"mediaImage":488,"name":502},"5375",{"url":489,"width":227,"height":490,"alt":491,"title":215,"size":492,"mime":397,"variations":215,"relatedContentVariations":493},"https:\u002F\u002Fcms.zuehlke.com\u002Fsites\u002Fdefault\u002Ffiles\u002Fimages\u002Fcybersecurity-challenges.jpg",561,"blue call to action button \"fraud\"",190000,[494,496,497,500,501],{"name":225,"url":495,"width":227,"height":228},"https:\u002F\u002Fcms.zuehlke.com\u002Fsites\u002Fdefault\u002Ffiles\u002Fstyles\u002Ffocal_point_3_2_small\u002Fpublic\u002Fimages\u002Fcybersecurity-challenges.jpg.webp?itok=IrVicoPU",{"name":225,"url":495,"width":227,"height":228},{"name":432,"url":498,"width":227,"height":499},"https:\u002F\u002Fcms.zuehlke.com\u002Fsites\u002Fdefault\u002Ffiles\u002Fstyles\u002Ffocal_point_3_2_medium\u002Fpublic\u002Fimages\u002Fcybersecurity-challenges.jpg.webp?itok=_eOvORJw",534,{"name":432,"url":498,"width":227,"height":499},{"name":432,"url":498,"width":227,"height":499},"cybersecurity-challenges.jpg",[504],{"id":368,"name":369},[506],{"id":372,"name":373}]