Case Study: ISO 27001 Remediation for an Australian Wealth Firm
At a glance
- Industry: Wealth Management (Australia)
- Engagement: ISO 27001 security remediation
- Platforms: Microsoft 365 Business Premium, Windows endpoints, perimeter firewalls
- Outcomes: Closed priority gaps, hardened M365, standardized endpoint policy, and enforced layered network controls—ready for external assessment and sustainable compliance operations.
Client background & objectives
A regulated wealth management company in Australia engaged Pentest Testing Corp to accelerate ISO 27001 remediation across people, process, and technology. Primary goals:
- Close audit-critical gaps,
- Secure adoption of Microsoft 365 Business Premium, and
- Implement consistent endpoint protection and firewall baselines aligned to ISO Annex A controls.
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Challenges
- Regulatory pressure & timelines: Tight runway ahead of the next ISO audit cycle.
- M365 sprawl risk: Multiple tenants/apps, uneven identity hygiene, and varying device states.
- Endpoint variance: Mixed Windows builds and inconsistent hardening policies.
- Perimeter complexity: Branch firewalls with inconsistent rules and limited segmentation.
Our approach (four workstreams)
1) ISO 27001 control gap mapping
- Mapped current state to Annex A themes (access control, asset management, operations security, supplier management, logging/monitoring, backup & recovery, and change management).
- Prioritized remediation with a risk × audit-impact model and created owner-tagged tickets and evidence templates (SOPs, logs, screenshots).
2) Microsoft 365 Business Premium hardening
- Identity & access: MFA for all roles, conditional access baselines, privileged access separation, and break-glass accounts.
- Email & data security: Anti-phish/anti-malware policies, Safe Links/Safe Attachments, DLP baselines for client PII, and mailbox auditing.
- Device compliance: Intune compliance policies, BitLocker, Defender settings, and automated quarantine for non-compliant devices.
- Operationalization: Change windows, rollback guidance, and living documentation for evidence capture.
3) Endpoint protection standardization
- Established a gold image and Intune configuration profiles (attack surface reduction rules, application control, exploit protection, tamper protection).
- Rolled out health reporting, alert routing, and post-incident triage playbooks mapped to ISO evidence needs.
4) Firewall & network controls
- Normalized rulesets, reduced any-any allowances, and enforced least-privilege service access.
- Introduced segmentation between management, user, and server zones; tightened egress; and instrumented logging with alert thresholds tied to incident response playbooks.
Deliverables
- Remediation plan & runbooks: Owner-based checklists, target configs, and rollback steps.
- Evidence pack: Screenshots, queries, policy exports, and log samples ready for auditors.
- Policy suite refresh: Access Control, Acceptable Use, Logging & Monitoring, Incident Response, Backup, and Vendor/Supplier Security.
- Operations enablement: Weekly risk burndown, secure change windows, and a “control health” dashboard.
Results
- Audit readiness: Priority Annex A gaps addressed with verifiable evidence trails.
- Stronger identity & data posture: M365 hardened across identity, email, and data protection.
- Consistent endpoints: Unified hardening and telemetry for rapid detection & response.
- Defensible perimeter: Cleaned-up rules, segmentation, and actionable logs.
What’s next after ISO 27001 Remediation
- Continuous verification: Quarterly control health checks and tabletop exercises.
- Targeted pentesting: Deep dives into web, API, and cloud surfaces ahead of product launches.
- Agency collaborations: For partner-led delivery or co-branded engagements, see our Agency Partnership program.
Related resources & helpful links
- AI Application Security: If your wealth platform uses AI/ML, protect models, data, and APIs with our AI Application Cybersecurity service.
- Recent blogs: Broken Access Control in WordPress, RCE Exploits in WordPress.
- Free tool: Start with a quick external check using our Free Website Vulnerability Scanner.
- Partner with us: Earn by referring or white-labeling security services—Offer Cybersecurity Service to Your Client.
- Community read: XSSI defenses for front-end teams—see “Stop XSSI Attack in React.js”.
Our Free Website Vulnerability Scanner tool Webpage
Why Pentest Testing Corp
We combine remediation-first consulting with hands-on engineering and clear audit evidence. Whether you need ISO 27001 gap closure, Microsoft 365 Business Premium hardening, or end-to-end penetration testing, our team delivers results that you can show to auditors and executives.
Call to action
Ready to accelerate ISO 27001 remediation or harden M365?
Book a consultation or run a quick check with our Free Website Security Scanner before we dive in together.
