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Ciaran Byrne

Ciaran is head of Edgescan’s operations team of 50+ analysts and penetration testers, which includes customer platform support. He has been in this role since 2018 and has worked closely with customers and internal teams to ensure quality deliverables, features and solutions for customers of every size. Ciaran joined Edgescan in 2015 as an Information Security Consultant, where he performed penetration testing assessments on a wide range of services for customers in many industries, both in Ireland and abroad. Prior to working in Information Security, Ciaran worked in several other industries where he gained practical experience that helps him in his managerial and customer-facing role. He holds a Bachelor's Degree in Computer Science, a Postgraduate Diploma in Business Analytics, and various industry certificates in Project Management.
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What is Autonomous Penetration Testing?

Application environments move faster than ever. Code ships weekly, infrastructure shifts under you, and new APIs appear between one assessment and the next.

Traditional penetration testing remains critical. But organizations increasingly need a way to validate security in the gaps between engagements. That is where autonomous penetration testing comes in.

What is autonomous penetration testing?

Autonomous penetration testing is an AI-driven offensive security assessment that investigates a target the way an attacker would, without a human running each step.

It is goal-oriented rather than signature-based. Where a scanner checks for known patterns, an autonomous agent reasons about a target, explores attack paths, chains findings together, and attempts to prove what it finds. It can run on demand or on a schedule, which makes continuous validation practical rather than aspirational.

The shift is from detection to reasoning. Scanners detect known patterns. Autonomous agents reason, explore, and exploit.

Why has it emerged now?

The idea is not new. What changed is the world around it. Software releases got faster, cloud-native architecture became the default, and CI/CD pipelines made change constant. Infrastructure that once shifted quarterly now shifts weekly.

At the same time, AI matured to the point where an agent can reason about a target instead of only pattern-matching against it. Faster change created the need. AI capability made the answer possible.

How does it differ from traditional penetration testing?

The two are not competitors. They answer different needs while complementing each other.

Traditional penetration testing is deep, manual, time-limited, and periodic: a skilled engagement at a point in time. Autonomous testing is fast, repeatable, and available on demand, built to keep pace with environments and threats that increasingly move at machine speed. One is a scheduled deep dive. The other is continuous validation in between.

Findings from a traditional penetration test feed into the context of the AI before it begins, and findings from the autonomous penetration test feed into the context used by humans before they begin traditional testing.

Used together, they are stronger, and the shift that matters is this: testing no longer has to wait for a calendar slot. Autonomous testing lets you validate the moment something changes.

When should you use autonomous penetration testing?

Use it whenever meaningful change outpaces your testing schedule. Before a major release, to catch what shipped. After an infrastructure change or a cloud migration, to confirm nothing opened up. Following an acquisition, when you inherit an unfamiliar attack surface. When new APIs go live. Or as a quarterly checkpoint between expert-led engagements. Or just for peace of mind at any time, that’s the joy of on-demand.

The common thread is timing. Autonomous testing lets you validate at the moment change happens, not months later.

The role of context

Here is the part that decides whether autonomous testing is useful or just noise. An autonomous test is only as good as the context available to it.

Pointed at a target with no background, an agent wastes effort and misses what matters. Given context – code, application state, APIs, authentication flows, and previous findings (whether perceived real or false by a human) –, an autonomous test starts focused and stays in scope. So the real question to ask of any autonomous testing is not which model sits behind it. This is the gravy that provides the value: what the system knows before it starts.

That is where the competitive ground is moving. The differentiator is no longer who has an AI model. It is who has the best context, orchestration, validation, controls, and integration into the security lifecycle.

Point an agent at a target with no background and it starts from zero. Give it the right context and it starts ahead. That head start is what separates useful autonomous testing from expensive noise.

The future of offensive security

The direction is clear. Offensive security is becoming faster, deeper, and continuous, able to keep pace with threats that are themselves increasingly AI-driven. Autonomous testing is a core part of that shift.

Applied with context, control, and validation, it closes the gap between assessments without lowering the bar on proof. The real advantage is not autonomy on its own, it’s how much the system already knows before it begins.

Where Edgescan fits

Edgescan has been building an autonomous penetration testing capability of its own: Edgescan Atomic, the AI-native offensive security layer of the Edgescan platform has been built by the humans at the forefront of the offensive security industry for over a decade. It combines adaptive offensive AI with Edgescan’s validated security intelligence to discover, investigate, and chain vulnerabilities at machine speed.

Because it starts from the wealth of knowledge what the platform already has knows, Atomic begins starts informed, and builds on that knowledge without wasting valuable computational time and tokens not blind. We are define the category first, because the approach matters more than any one product. Next, we will share why we built it, and the customer problem behind it.

Because it starts with a wealth of knowledge Edgescan has already built up through scanning and traditional penetration testing, Atomic begins informed and stays informed, without wasting valuable computational time and money. Using Atomic as part of an overall Offensive Security program is the way forward to complete the package. 

To see how Edgescan Atomic brings AI-native offensive testing to your security program, request a demo.

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