ISO 27001 · NIST CSF · Threat-Informed Assurance

CYBERSECURITY
CONTROLS
THAT ACTUALLY
WORK.

Independent security assurance beyond compliance checklists — evaluating whether your controls are effective under real-world threat conditions, not just documented in policy frameworks.

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Aligned with
ISO 27001NIST CSFThreat-Informed
ISO 27001ISMS standard
NIST CSFRisk framework
Threat-InformedReal-world lens
3rd LineIndependent
Board-ReadyReporting outputs

The challenge

Documentation is not
the same as
effective security.

Most security programmes document controls thoroughly. Third-party breaches and regulatory findings consistently expose the gap between what is written and what actually works under threat conditions.

Certification does not mean effective security

Passing an ISO 27001 audit confirms a management system exists. It does not confirm your controls stop real attackers. Threat actors — and regulators, eventually — exploit the distinction between documented controls and controls that function under real-world attack conditions.

Internal assessors lack the independent lens

Security teams assessing their own controls face the same structural conflict that affects all self-assessment. The independence that board risk committees, regulators, and insurers require — and increasingly demand evidence of — is not achievable internally.

Engagement models

Two assurance tracks.
One independent view.

EONTA delivers cybersecurity assurance through two structured tracks — each calibrated to your framework requirements, governance structure, and regulatory environment.

ISO 27001 · ISMS Assessment

Conformity Assessment

Structured evaluation of your Information Security Management System design and control operating effectiveness — aligned to ISO 27001:2022 requirements and focused on audit defensibility.

  • ISMS scope and boundary validation
  • Annex A control gap assessment
  • Risk treatment plan evaluation
  • Evidence quality and completeness review
  • Corrective action and improvement cycle assessment

ISO 27001:2022 aligned

Structured for certification audit readiness

No implementation conflict

"Are our ISO 27001 controls designed and operating effectively — and can we prove it?"
NIST CSF · Risk Alignment

Threat-Informed Assessment

Risk-informed evaluation of your cybersecurity posture across the NIST Cybersecurity Framework — applying sector-relevant threat scenarios to identify where controls fail under realistic conditions.

  • Threat scenario mapping to control framework
  • Identify and Protect function assessment
  • Detect, Respond, and Recover evaluation
  • Supply chain and third-party risk review
  • Board-level findings summary

Threat-informed — not tick-box

Board-ready and regulator-ready outputs

Third-party risk included as standard

"Would our security controls stop the threats most likely to target institutions like ours?"

Core capabilities

What we evaluate.

Each capability applies a threat-informed, evidence-based methodology — producing conclusions that stand up to board and regulatory scrutiny.

ISO 27001 Conformity Assessment

Structured ISMS evaluation against ISO 27001:2022 — gap analysis, control design and operating effectiveness, and audit readiness assessment.

NIST CSF Alignment

Evaluation across all five NIST CSF functions — Identify, Protect, Detect, Respond, Recover — with sector-specific threat mapping applied throughout.

Control Effectiveness Testing

Evidence-based testing of whether controls operate as designed under real conditions — the distinction between documented and effective security.

Threat-Informed Evaluation

Application of sector-relevant threat scenarios to identify control gaps before threat actors do — not hypothetical risks, but documented adversary techniques.

Third-Party & Supply Chain Risk

Independent assessment of vendor security assurance — evaluating whether your third-party risk programme produces reliable evidence of supply chain security.

Board-Level Reporting

Findings structured for governance consumption — risk-rated, contextualised, and translated for board risk committees and regulatory review.

How it works

From threat landscape
to board-level clarity.

A structured engagement designed to minimise operational disruption while producing findings your governance and regulatory stakeholders can act on.

Scope

Define framework, assessment boundaries, in-scope systems, and threat scenario relevance based on your sector and regulatory context.

Assess

Structured control walkthrough, evidence review, and threat-informed testing against ISO 27001 and NIST CSF requirements.

Test

Evidence-based control effectiveness testing — validating whether controls function as designed against realistic threat conditions.

Report

Risk-rated findings, management response framework, and board-ready summary structured for governance and regulatory consumption.

Why EONTA

What independent
cyber assurance means.

No Implementation Conflict

EONTA does not sell security products, provide managed security services, or implement controls. Our only interest is the quality of your assurance — which is why conclusions from EONTA carry the independence weight that self-assessment and vendor assessments cannot.

Threat-Informed Methodology

Our assessments apply sector-relevant threat intelligence to the control framework — not generic checklists. A financial institution faces a specific adversary landscape, and our methodology reflects that specificity in every evaluation we conduct.

Board-Ready and Regulator-Ready

Findings are structured for two audiences simultaneously: the board risk committee that needs risk-rated strategic clarity, and the regulator who needs evidence-based technical substance. Both documents are standard deliverables.

Who this is for

Built for those
accountable for security risk.

EONTA's cybersecurity assurance services are designed for the governance functions and executive roles directly accountable for security posture, regulatory standing, and institutional resilience.

Primary stakeholders

Chief Information Security OfficersBoard Risk CommitteesInternal Audit FunctionsChief Risk OfficersRegulators & SupervisorsCFOs & COOsIT Security ArchitectsCompliance Officers

Common engagement triggers

Annual security review or regulatory audit approaching

Institutions seeking independent validation of security control effectiveness ahead of regulatory examination or board audit review.

Post-incident assurance requirement

Governance functions requiring independent assessment of control gaps following a security incident, near-miss, or third-party breach in a peer institution.

Third-party or supply chain risk concern

Institutions requiring independent evaluation of vendor security assurance programmes or supply chain risk controls.

Frequently asked

Questions before
every security engagement.

An ISO 27001 certification audit is conducted by an accredited certification body and results in a certificate. EONTA's conformity assessment is an independent third-line evaluation that examines whether your ISMS is genuinely effective — going beyond what a certification audit typically probes. We evaluate control operating effectiveness, not just documented procedures, producing evidence your board and regulators can rely on.
Threat-informed means we apply documented adversary techniques — drawn from sector-relevant threat intelligence and frameworks such as MITRE ATT&CK — to your control landscape. Rather than asking 'does this control exist?', we ask 'would this control function against the techniques adversaries actually use against financial institutions?' The result is a more realistic assessment of your true security posture.
Our methodology combines evidence-based document review, control walkthroughs, and targeted effectiveness testing — the balance determined by agreed scope. We focus on whether controls function, not just whether they are documented. Technical testing where included is always scoped and agreed in advance. Our engagement is structured to produce audit-defensible findings, not penetration test outputs.
For a conformity assessment covering a defined ISMS scope: typically 4–6 weeks. For a threat-informed NIST CSF assessment across a broader control landscape: typically 5–8 weeks. Duration depends on scope complexity, existing evidence maturity, and availability of key stakeholders. A scoped timeline is confirmed at the outset of every engagement.
No specific pre-conditions are required. We have conducted assessments at institutions with mature, certified ISMS environments and at institutions building their first structured security programme. Our methodology adapts to the maturity of your current state. What we need most is access to key stakeholders and any existing control documentation.
Standard deliverables include: a structured findings report with risk-rated control gaps and observations; an evidence quality assessment; a remediation priority matrix; a management response framework; and a board-ready executive summary. For ISO 27001-scoped engagements, we also produce an audit readiness assessment and pre-certification gap report.
Financial regulators — including the EBA, PRA, and ECB — expect documented evidence of effective security controls, not just the existence of policies. EONTA's assurance outputs are structured to provide exactly that: control-level evidence, testing results, and gap analysis that supports your regulatory submissions and examination responses. We understand the examination posture of major EMEA regulators.
Threat-informed means we apply documented adversary techniques — drawn from sector-relevant threat intelligence and frameworks such as MITRE ATT&CK — to your control landscape. Rather than asking 'does this control exist?', we ask 'would this control function against the techniques adversaries targeting financial institutions actually use?' The result is a more realistic assessment of your true security posture.
Our methodology combines evidence-based document review, control walkthroughs, and targeted effectiveness testing — the balance of which is determined by scope. We focus on whether controls function, not just whether they are documented. Technical testing where included is always scoped and agreed in advance. Our engagement is structured to produce audit-defensible findings, not penetration test outputs.
For a conformity assessment covering a defined ISMS scope: typically 4–6 weeks. For a threat-informed NIST CSF assessment across a broader control landscape: typically 5–8 weeks. Duration depends on scope complexity, existing evidence maturity, and availability of key stakeholders. A scoped timeline is confirmed at the outset of every engagement.
No specific pre-conditions are required. We have conducted assessments at institutions with mature, certified ISMS environments and at institutions building their first structured security programme. Our methodology adapts to the maturity of your current state. What we need most is access to key stakeholders and existing control documentation for review.
Standard deliverables include: a structured findings report with risk-rated control gaps and observations; an evidence quality assessment; a remediation priority matrix; a management response framework; and a board-ready executive summary. For ISO 27001 engagements, we also produce an audit readiness assessment and pre-certification gap report.

Take the next step

When did you last independently verify that your controls actually work?

Most organisations know their controls are documented. Fewer know they are effective. EONTA closes that gap — independently, with evidence.

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All scoping conversations are confidential. EONTA does not share engagement details with third parties.