External Penetration Testing Engagement
External attack surface reduced by 74% following identification and remediation of 18 critical and high-severity finding…
External Penetration Testing Engagement
Financial Services · North America
At a glance
Executive Summary
Project Details
Industry
Financial Services
Region
North America
Services Provided
- External Penetration Testing
- Network Enumeration
- Credential Validation
- Exploitation Assessment
- Remediation Advisory
Key Takeaways
- Three externally reachable services were found to accept default or weak credentials — all remediated within the first 48 hours of report delivery.
- Client passed their cyber insurer's annual security questionnaire within two weeks of completing remediation, unlocking a 12% premium reduction.
Overview
A mid-sized financial services firm engaged Blue Orca Solutions to conduct a structured external penetration test ahead of their annual cyber insurance renewal. The engagement scope covered all externally reachable IP ranges, subdomains, and public-facing services. Blue Orca performed active reconnaissance, enumeration, and exploitation attempts to identify vulnerabilities that an external threat actor could realistically exploit without prior access.
Key outcomes
74%
External attack surface reduced by following decommission of legacy s…
12%
Client's cyber insurer accepted the penetration test report and a…
74%
External attack surface reduced by following identification and remed…
Deep dive
Case Narrative
Challenges
- The client had never undergone a formal penetration test and had limited visibility into their externally exposed attack surface.
- Several legacy services were still externally accessible from a previous office relocation, unknown to the current IT team.
- The engagement needed to complete within a defined two-week window to align with the insurer's renewal submission deadline.
- Findings had to be presented in a format accessible to both technical staff and the executive team for board-level reporting.
Our Approach
- Reconnaissance and Attack Surface MappingBlue Orca conducted passive and active reconnaissance across the client's registered IP ranges, domains, and subdomains. Asset discovery surfaced 11 services not in the client's known inventory, including two legacy VPN endpoints and a publicly reachable admin portal from a decommissioned system.
- Vulnerability Enumeration and ExploitationEach identified service was assessed for known CVEs, misconfigurations, and authentication weaknesses. Exploitation was performed in a controlled manner with rollback safeguards agreed in advance. Three services accepted default or guessable credentials; one allowed unauthenticated access to configuration data.
- Report Delivery and Remediation AdvisoryA dual-format report was delivered: a technical annex with proof-of-concept evidence, CVSS scores, and remediation steps, and an executive summary mapping findings to business risk. Blue Orca held a live walkthrough session with the IT and security leads to prioritise remediation sequencing.
- Remediation VerificationA focused retest was conducted 10 days after initial delivery to validate that all critical and high findings had been addressed. All 18 findings were confirmed remediated or formally accepted with documented compensating controls.
Results
- 18 critical and high findings remediated in full within the agreed timeframe.
- External attack surface reduced by 74% following decommission of legacy services identified during reconnaissance.
- Client's cyber insurer accepted the penetration test report and awarded a 12% premium reduction on renewal.
- IT team equipped with a prioritised remediation register and recurring external scan schedule for ongoing exposure management.
Why Blue Orca Solutions?
Blue Orca combined technical depth with clear communication, delivering a penetration test that satisfied insurer requirements, enabled executive-level reporting, and left the client with a measurably smaller attack surface.
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