Penetration Testing
Strengthen Your Defences with Real-World Attack Simulations. At Duffy Cyber Advisory, our Penetration Testing service gives you the power to find and fix the vulnerabilities that attackers could exploit, before they do. We ethically simulate real-world cyberattacks on your network, infrastructure, and applications to help you understand your true security risk.
What we offer
- External Network Testing: Simulating attacks from outside your organisation to test your internet-facing systems.
- Internal Network Testing: Evaluating what happens if an attacker gains a foothold inside or the risk posed by an insider threat, testing segmentation, access controls, and lateral movement.
- Web Application Testing: Looking for vulnerabilities from the OWASP Top Ten list, SQL injection, cross-site scripting, insecure authentication, business logic flaws, and other common web vulnerabilities.
- Manual & Automated Techniques: We base our testing on globally recognised frameworks including OWASP, NIST, and PTES, ensuring your assessment reflects the same standards used by leading security teams worldwide.
- Detailed Reporting & Debrief: You’ll receive a prioritised, clear report with remediation recommendations, and we walk you through the findings with your team.
Our Approach
We take a collaborative, risk-aware approach. We start with scoping and planning to understand your critical assets, then conduct reconnaissance, exploitation, and post-exploitation activities. Our methodology mirrors how real attackers operate, so our findings reflect real risks. Throughout, we minimise disruption to your business and prioritise transparency.

Why it Matters
Cyber threats are constantly evolving, and even well-configured systems can have hidden weaknesses. Without regular, thorough testing, vulnerabilities may go unnoticed, putting your data, operations, and reputation at risk. Penetration testing isn’t just about finding bugs: it’s about proactively assessing how an attacker might breach your defences, and giving you the insights you need to reduce your risk.
What You Will Gain
Real Insight
Our testing shows exactly how an attacker could move through your environment, giving you a true understanding of your exposure and the potential business impact. We don't just focus on theoretical vulnerabilities.
Prioritised & Actionable Recommendations
We translate technical findings into clear, practical steps your team can take, helping you focus effort and budget where it matters most. This ensures your remediation work is efficient, targeted, and aligned with your organisation’s real-world priorities.
Support Compliance
Our reports align with frameworks like ISO 27001, NIS2, and industry best practices, providing the assurance and documentation auditors and stakeholders expect.
Take the Next Step in Protecting Your Business
Don’t wait for an attacker to find your weaknesses. Contact us to schedule your penetration test or ask how we can tailor our services to your scale, budget, and risk profile.