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Payment Institutions × Technology Data — International / Multilateral · published 2026-05-28 · methodology v2.1

Origin of the phrase 'secure the periphery, protect the core'

RLB-F-INT-BIS-CPMI-IOSCO-CYBER-RESILIENCE-FMI-2016-Q014
What the RLB Specialist Panel found

2. Origin of the phrase 'secure the periphery, protect the core'

  • Question (paraphrased to protect IP): Does the CPMI-IOSCO 2016 Cyber Guidance use the phrase 'secure the periphery, protect the core', and if not, where does the phrase originate?
  • Source regulation: Guidance on Cyber Resilience for Financial Market Infrastructures (CPMI-IOSCO 2016) (Regulator portal: https://www.bis.org)
  • What AI assistants typically say: AI assistants correctly note that the phrase does not appear in the 2016 Cyber Resilience Guidance, but then misattribute it to the CPMI's later work on reducing the risk of wholesale payments fraud relating to endpoint security, describing that as the document where the phrase is associated.
  • What the regulator actually says: The phrase 'secure the periphery and protect the core' originates from a 2018 speech by Benoît Cœuré on the topics of cryptos, cyber, and CCPs, published as BIS review r181115a. It describes the CPMI's strategic approach but does not appear in the 2016 Cyber Resilience Guidance.
  • Why the AI went wrong: AI tools identified a plausible 2018 CPMI document — the wholesale payments fraud and endpoint security strategy — and attributed the phrase to it, conflating two distinct 2018 CPMI publications with different subject matter and different authors. The actual source is a speech, not a strategy paper.
  • Cited source(s):
Impact for this audience

A Technology & Data team that accepts an AI misattribution of the phrase 'secure the periphery and protect the core' to the CPMI wholesale payments fraud strategy — rather than to Cœuré's 2018 speech — may cite the wrong document in internal papers, regulatory submissions, or board-level cyber strategy materials. The practical harm is reputational and credibility-based: a firm that cites a source that does not contain the attributed language, or that mischaracterises the scope of a CPMI policy document, signals inadequate primary-source diligence to any supervisor or auditor reviewing the firm's regulatory competence. For Payment Institutions firms in multiple jurisdictions, where senior managers are individually accountable for the accuracy of regulatory submissions, misattribution carries a non-trivial personal and institutional risk.

References — raw findings (per AI model)
This finding also affects
← Previous finding Finding 1. NIST Cybersecurity Framework citation in the 2016 CPMI-IOSCO guidance Next finding → Finding 3. Operational detail for cyber incident response in the 2016 guidance versus later documents
Cite this finding

Each finding has a stable Citation ID (RLB-F-… for aggregated case-study findings, RLB-H-… for raw per-model hallucinations) — like a DOI, the ID always resolves to the canonical finding even if URLs change.

Plain text 
RegLeg Specialist Panel (2026). "Origin of the phrase 'secure the periphery, protect the core' — Payment Institutions × Technology Data — International / Multilateral." Citation ID: RLB-F-INT-BIS-CPMI-IOSCO-CYBER-RESILIENCE-FMI-2016-Q014. RegLegBrief AI Hallucination Research, published 2026-05-28. https://reglegbrief.com/audiences/sectors/int/payment_institutions/technology_data/finding/INT-BIS-CPMI-INT-001-CPMI-IOSCO-CYBER-RESILIENCE-FMI-2016-v1-014/
APA 7th edition 
RegLeg Specialist Panel. (2026). Origin of the phrase 'secure the periphery, protect the core' [Hallucination finding RLB-F-INT-BIS-CPMI-IOSCO-CYBER-RESILIENCE-FMI-2016-Q014]. RegLegBrief AI Hallucination Research. https://reglegbrief.com/audiences/sectors/int/payment_institutions/technology_data/finding/INT-BIS-CPMI-INT-001-CPMI-IOSCO-CYBER-RESILIENCE-FMI-2016-v1-014/
Bluebook / OSCOLA (US + UK legal) 
RegLeg Specialist Panel, Origin of the phrase 'secure the periphery, protect the core' [RLB-F-INT-BIS-CPMI-IOSCO-CYBER-RESILIENCE-FMI-2016-Q014], RegLegBrief AI Hallucination Research (May 28, 2026), https://reglegbrief.com/audiences/sectors/int/payment_institutions/technology_data/finding/INT-BIS-CPMI-INT-001-CPMI-IOSCO-CYBER-RESILIENCE-FMI-2016-v1-014/.
BibTeX 
@misc{reglegbrief_RLB_F_INT_BIS_CPMI_IOSCO_CYBER_RESILIENCE_FMI_2016_Q014,
  author    = {RegLeg Specialist Panel},
  title     = {Origin of the phrase 'secure the periphery, protect the core'},
  year      = {2026},
  publisher = {RegLegBrief AI Hallucination Research},
  note      = {Hallucination finding Citation ID: RLB-F-INT-BIS-CPMI-IOSCO-CYBER-RESILIENCE-FMI-2016-Q014},
  url       = {https://reglegbrief.com/audiences/sectors/int/payment_institutions/technology_data/finding/INT-BIS-CPMI-INT-001-CPMI-IOSCO-CYBER-RESILIENCE-FMI-2016-v1-014/}
}
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