{"id":128524,"date":"2026-10-12T11:17:52","date_gmt":"2026-10-12T05:47:52","guid":{"rendered":"https:\/\/vajiramandravi.com\/current-affairs\/?p=128524"},"modified":"2026-10-12T11:17:52","modified_gmt":"2026-10-12T05:47:52","slug":"quantum-computing-in-banking-the-next-big-cybersecurity-threat","status":"publish","type":"post","link":"https:\/\/vajiramandravi.com\/current-affairs\/quantum-computing-in-banking-the-next-big-cybersecurity-threat\/","title":{"rendered":"Quantum Computing in Banking: The Next Big Cybersecurity Threat"},"content":{"rendered":"<h2><b>Quantum Computing in Banking Latest News<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">While artificial intelligence (AI) dominates current cybersecurity concerns, a far bigger, longer-term threat is quietly emerging for the banking sector: quantum computing.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Financial institutions and regulators worldwide, including in India, have already begun preparing for this threat \u2014 years before it is expected to fully materialise.<\/span><\/li>\n<\/ul>\n<h2><b>Current Cybersecurity Push in Indian Banking<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Before quantum enters the picture, regulators have already stepped up conventional cyber preparedness:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">The Reserve Bank of India (RBI) issued a <\/span><a href=\"https:\/\/vajiramandravi.com\/current-affairs\/ai-and-financial-cybersecurity-how-rbi-and-sebi-are-tightening-rules\/\" target=\"_blank\"><b>new cybersecurity and technology-resilience framework<\/b><\/a><span style=\"font-weight: 400;\"> for commercial banks in July 2026, covering IT governance, cyber-risk management, and incident response.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">The Securities and Exchange Board of India (SEBI) introduced an <\/span><a href=\"https:\/\/vajiramandravi.com\/current-affairs\/information-technology-resilience-index\/\" target=\"_blank\"><b>IT Resilience Index<\/b><\/a><span style=\"font-weight: 400;\"> in August 2026 for market infrastructure institutions, to measure robustness of critical IT systems and spot weaknesses early.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2><b>About Quantum Computing<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Traditional computers store data as a bit (value 0 or 1). Quantum computers use a <\/span><b>qubit <\/b><span style=\"font-weight: 400;\">(quantum bit), which can exist as a combination of 0 and 1 \u2014 a property called superposition.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Qubits also exhibit <\/span><b>entanglement,<\/b><span style=\"font-weight: 400;\"> where states of different qubits become closely correlated.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Quantum algorithms exploit these properties to amplify correct answers and suppress wrong ones, giving quantum computers a massive computational edge for certain problems.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">It can solve in minutes or hours what classical computers would take millennia to complete.<\/span><\/li>\n<\/ul>\n<h2><b>Why This Threatens Bank Encryption<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Modern cryptography relies on mathematical problems that are extremely hard for classical computers to solve. Some widely used public-key systems are:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">RSA (Rivest\u2013Shamir\u2013Adleman): relies on difficulty of factoring large numbers.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Elliptic-curve cryptography: relies on difficulty of discrete-logarithm problems.<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">India\u2019s financial ecosystem is deeply digitised through UPI, Aadhaar, RTGS, and NEFT \u2014 all underpinned by such cryptography.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The threat isn\u2019t that quantum computers would directly hack a payment system. Instead, they could <\/span><b>undermine<\/b><span style=\"font-weight: 400;\"> the cryptographic building blocks used for authentication, <\/span><span style=\"font-weight: 400;\">secure communication, key exchange, and digital signatures across digital infrastructure<\/span><span style=\"font-weight: 400;\">.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Experts explained: by 2029\u20132030, quantum computers could become powerful enough to decrypt historical encrypted data \u2014 a point often called the quantum deadline.<\/span><\/li>\n<\/ul>\n<h2><b>Why Banks Can\u2019t Wait<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The key reason for acting now is a threat called \u201c<\/span><b>Harvest Now, Decrypt Later<\/b><span style=\"font-weight: 400;\">\u201d (HNDL):<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Attackers can intercept and store encrypted data today, planning to decrypt it later once powerful quantum computers exist.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">This makes long-term confidential data especially vulnerable.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">As per the Digital Threat Report 2025\u201326 (by CERT-In), while full-scale quantum threats haven\u2019t arrived, HNDL strategies are already active.<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>The solution:<\/b><span style=\"font-weight: 400;\"> Transition to <\/span><b>Post-Quantum Cryptography<\/b><span style=\"font-weight: 400;\"> (PQC) \u2014 encryption algorithms resistant to quantum attacks \u2014 before the threat fully emerges.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Preparation involves:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Creating an inventory of cryptographic systems in use.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Identifying the most sensitive\/critical data.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Testing quantum-resistant algorithms.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Working with technology vendors.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><b>Building Crypto-agility<\/b><span style=\"font-weight: 400;\"> \u2014 the ability to switch cryptographic standards without a complete system rebuild. This matters because bank infrastructure spans legacy systems, cloud platforms, third-party vendors, and payment networks.<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<h2><b>How Imminent Is the Threat?<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">India currently has only a handful of quantum computers, mostly under 10 qubits, developed by institutions like IISc Bengaluru and startups like QpiAI.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">India\u2019s <strong><a href=\"https:\/\/vajiramandravi.com\/current-affairs\/national-quantum-mission-nqm\/\" target=\"_blank\">National Quantum Mission<\/a><\/strong> (launched 2023) aims to scale from 20\u201350 physical qubits initially to larger systems over time.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Globally, NIST (US) has already finalised PQC standards; the G7 has a roadmap for financial-sector transition; the EU wants member states to begin transition by end-2026, with high-risk systems migrated by end-2030.<\/span><\/li>\n<\/ul>\n<h2><b>India\u2019s Quantum-Safe Roadmap<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The Department of Science and Technology\u2019s roadmap for banking\/financial services\/insurance envisages:\u00a0<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Foundational work by 2027;\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Migration of high-priority systems by 2028; and\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Full PQC adoption by 2029.<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>RBI\u2019s<\/b><span style=\"font-weight: 400;\"> Quantum Secure and Adaptive Financial Ecosystem (<\/span><b>Q-SAFE<\/b><span style=\"font-weight: 400;\">) expert committee is examining quantum\u2019s implications for finance and recommending a roadmap.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>NITI Aayog\u2019s 2025 roadmap<\/b><span style=\"font-weight: 400;\"> for a quantum-powered economy identifies financial modelling, fraud detection, and encryption as key application areas.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">This creates a dual policy challenge for India: protecting digital infrastructure from the quantum threat while simultaneously building domestic quantum capabilities for economic gain.<\/span><\/li>\n<\/ul>\n<h2><b>Conclusion<\/b><\/h2>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Quantum computing represents a slow-building but potentially severe threat to the cryptographic backbone of digital finance \u2014 not because it will \u201chack\u201d banks directly, but because it could eventually break the encryption securing decades of sensitive data.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The \u201cHarvest Now, Decrypt Later\u201d risk makes early action non-negotiable, which is why India, alongside global regulators, is already laying out phased roadmaps toward post-quantum cryptography.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">The challenge ahead is as much about building domestic quantum capability as it is about defending against it.<\/span><\/li>\n<\/ul>\n<p><b>Source:<\/b> <a href=\"https:\/\/indianexpress.com\/article\/explained\/explained-sci-tech\/quantum-enhanced-quantum-safe-banks-advance-new-big-threat-10911407\/\" target=\"_blank\" rel=\"nofollow noopener\"><span style=\"font-weight: 400;\"><strong>IE<\/strong><\/span><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Quantum Computing in Banking threatens current encryption systems, prompting Indian financial institutions to prepare for post-quantum cryptography and stronger digital security.<\/p>\n","protected":false},"author":18,"featured_media":128557,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[18],"tags":[60,10809,22,59],"class_list":["post-128524","post","type-post","status-publish","format-standard","has-post-thumbnail","category-upsc-mains-current-affairs","tag-mains-articles","tag-quantum-computing-in-banking","tag-upsc-current-affairs","tag-upsc-mains-current-affairs","no-featured-image-padding"],"acf":[],"_links":{"self":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/128524","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/users\/18"}],"replies":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/comments?post=128524"}],"version-history":[{"count":4,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/128524\/revisions"}],"predecessor-version":[{"id":128551,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/posts\/128524\/revisions\/128551"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media\/128557"}],"wp:attachment":[{"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/media?parent=128524"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/categories?post=128524"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vajiramandravi.com\/current-affairs\/wp-json\/wp\/v2\/tags?post=128524"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}