Cyber Intelligence Sharing Platform Enhancements

Our Ref.: B1/15C 27 December 2024 The Chief Executive All Authorized Institutions Dear Sir/Madam, Cyber Intelligence Sharing Platform Enhancements The Hong Kong Monetary Authority (HKMA) welcomes the package of enhancements made to the Cyber Intelligence Sharing Platform (CISP) as announced by the Hong Kong Association of Banks (HKAB) on 27 December 20241 . I am writing to request authorized institutions’ (AIs’) active participation in the CISP. As the cyber threat landscape continues to evolve, the sharing of intelligence within the banking sector and across different financial sectors is crucial in enabling proactive defence and a collective response to cyber incidents, which may impact financial stability given the interconnected nature of the financial system. The HKMA has therefore been working closely with HKAB and market participants to enhance the CISP and its utilisation. HKAB’s recent enhancements aim to further promote a collaborative environment for threat intelligence sharing via (1) establishing guidelines and best practices; (2) adopting a Forum for verbal intelligence sharing that complements the online Platform; and (3) linking up intelligence sharing platforms between the banking, insurance and capital market sectors. /…page 2 1 HKAB issued a circular titled “Enhancement on the Threat Intelligence Sharing and Collaboration on the Cyber Intelligence Sharing Platform (CISP)” on 27 December 2024, which detailed the enhancements.

• 2 - We expect all AIs to actively engage their intelligence monitoring functions to reap the benefits of the CISP and its new features. In particular, AIs are encouraged to actively participate in and contribute to intelligence sharing in the CISP, including both the online Platform and the verbal Forum, thereby strengthening the cyber resilience of the financial system of Hong Kong. The HKMA will continue to work closely with HKAB, other domestic financial authorities, and market participants to enhance and facilitate the intelligence sharing process. Should your institution have any questions on the above, please contact us at ebanking@hkma.iclnet.hk. Yours sincerely, Carmen Chu Executive Director (Banking Supervision) Encl. cc. The Chairperson, The Hong Kong Association of Banks