1、Quantum Migration:Mapping theEmerging LandscapeOctober 2025Foreword The advent of quantum computing represents a paradigm shift for cybersecurity in the financial sector.The potential for existing encryption methods to be compromised within the next 5 10 years has already catalysed concern and actio

2、n across a number of financial entities,global regulatory,and industry bodies.For every financial entity,the threat quantum computers present to encryption raises urgent questions regarding data protection,the risk of disruption to critical operations,and the resilience of the sector overall in an i

3、ncreasingly digitised financial ecosystem.Without action,banks will undoubtedly be caught out by the advent of cryptographically-relevant quantum computers and its inevitable misuse by malicious actors to break encryption to access sensitive data.To mitigate this risk,financial entities must prepare

4、 by transitioning to post-quantum cryptography.In response,GFMA have convened a series of expert-led roundtables,to draw out and map the activities of institutions including the US National Institute of Standards and Technology(NIST),the Financial Conduct Authority(FCA),the World Economic Forum(WEF)

5、,the Bank of Englands Cross Market Operational Resilience Group(CMORG),and the Quantum Safe Financial Forum(QSFF).We recognise other bodies,such as FS-ISAC1,are also active in this space.This paper is intended to serve as an educational tool for circulation among non-quantum experts within financial

6、 entities.It provides a summary of the emerging landscape and proposes a set of collective next steps as financial entities endeavour to understand,prepare for,and ultimately transition to systems that are resistant to quantum attacks.The recommendations outlined herein reflect both the publicly ava