The Project
A time-limited external network penetration test for UK technology firm. The objective was to identify, validate and assess exploitable vulnerabilities across the client’s internet-facing infrastructure and to provide a clear, prioritised path to remediation.
BSS used a structured and systematic methodology, combining automated scanning with manual testing by experienced consultants, performed in accordance with industry best practice and recognised penetration testing standards.
The challenge:
The client’s internet-facing systems, including its perimeter firewall infrastructure, represent the first point of contact for any external attacker. The client needed an accurate and reliable view of its external attack surface: which IP addresses, domains and services were exposed, whether any could be exploited, and what the real-world impact of exploitation would be. The assessment had to be delivered within a defined testing window and without unnecessary disruption to live services.
The Solution
BSS began with passive reconnaissance to gather publicly available information about the client’s external estate, followed by active enumeration to identify internet-facing IP addresses, domains, services and systems exposed to potential attackers.
A combination of automated scanning tools and manual testing techniques was then used to identify, validate and assess exploitable vulnerabilities, including insecure configurations, exposed or unnecessary services, weak authentication and access controls, and outdated or vulnerable software components.
Where appropriate, vulnerabilities were validated to confirm their real-world impact while avoiding disruption to live systems. All testing was performed under formal written authorisation, within an agreed scope and timeframe, and in accordance with CREST standards.
The Outcome
BSS delivered a formal penetration testing report comprising an executive summary of high-level findings and a technical section containing detailed findings for every item in scope.
Each identified vulnerability was assigned a clear risk rating with supporting rationale, alongside prioritised, actionable recommendations based on criticality.
The client received a reliable, evidence-based view of its external security posture and a practical remediation roadmap, establishing a baseline that can be retested as its environment evolves.
