What Hadrian Is
Hadrian is an External Attack Surface Management (EASM) platform that continuously discovers, monitors, and tests an organisation's internet-facing assets. Founded in 2021 and headquartered in the Netherlands, Hadrian has rapidly established itself as a category leader. GigaOm named Hadrian a Leader in their 2024 Radar Report for Attack Surface Management. Gartner recognised Hadrian as a representative vendor in the EASM space. The platform is used by enterprises, financial institutions, and government organisations across Europe. What differentiates Hadrian from other EASM tools is its offensive security approach — the platform does not just discover assets, it actively tests them using the same techniques that real attackers employ.
How We Deploy Hadrian at Kyanite Blue
Hadrian is the EASM layer in every Kyanite Blue managed security stack. During client onboarding, we seed Hadrian with the organisation's primary domains, known IP ranges, and cloud provider details. Within 24-48 hours, the platform delivers a comprehensive map of the client's external attack surface — and in every single deployment to date, it has discovered assets the client did not know were exposed. The most common findings are forgotten subdomains, legacy web applications, development or staging environments with production data, and misconfigured cloud storage. Hadrian's risk-prioritised findings let us immediately address the most critical exposures rather than working through a flat list of thousands of alerts.
- Typical onboarding to first findings: 24-48 hours
- Average discovery of 20-40% more assets than client inventory
- Risk-prioritised findings — critical issues surfaced first
- Continuous monitoring — new assets detected within hours
- Integrates with ticketing systems for remediation workflow
What Hadrian Does Exceptionally Well
Hadrian's strongest capability is contextual risk assessment. Rather than flagging every open port or outdated header, the platform chains findings together the way an attacker would. It might discover a subdomain, fingerprint it as running an outdated version of a specific framework, confirm that a known exploit exists, and validate that the exploit is viable against this specific instance. This contextual chaining dramatically reduces false positives and lets security teams focus on genuinely exploitable risks. The platform's automated retesting also eliminates the "was this actually fixed?" problem — once a finding is remediated, Hadrian confirms the fix automatically. The dashboard is clean and well-designed, which matters when you are presenting findings to non-technical stakeholders.
Who Hadrian Is Right For
Hadrian is ideal for organisations with a meaningful external footprint — multiple domains, cloud infrastructure, third-party integrations, and distributed teams creating assets outside central IT control. It delivers the most value for organisations between 200 and 10,000 employees that have outgrown spreadsheet-based asset tracking but do not have the budget or headcount for a dedicated attack surface management team. Financial services firms, healthcare organisations, iGaming operators, and any business handling sensitive data will see immediate ROI. Organisations with fewer than 50 employees and a simple web presence may find it more capability than they need — though the visibility it provides is valuable at any scale.
The Kyanite Blue Verdict
Hadrian earns its place in our managed security stack because it solves a problem that no other tool in the stack addresses: continuous, attacker-perspective visibility of the external attack surface. Coro protects endpoints, BlackFog prevents data exfiltration, Panorays manages third-party risk — but none of them show you what an attacker can see from the outside. Hadrian fills that gap completely. The platform has improved consistently since we began deploying it, with new capabilities arriving monthly. If you are evaluating EASM solutions, we are happy to walk you through a demo based on our real deployment experience.
Frequently Asked Questions
Is Hadrian a penetration testing replacement?
Hadrian provides continuous automated security testing that complements but does not fully replace expert-led penetration testing. It excels at continuous discovery and validation of external assets, while human pentesters add value for social engineering, complex attack paths, and internal network testing.
How long does Hadrian take to deploy?
Initial setup takes less than an hour. Seed Hadrian with your primary domains and cloud details, and the platform begins discovering assets immediately. A comprehensive first scan of the external attack surface is typically complete within 24-48 hours.
Does Hadrian cause disruption to live systems?
Hadrian is designed to test safely. Its probes are lightweight and non-destructive. In our deployments, we have never experienced any client-facing service disruption from Hadrian's scanning or testing activity.
What recognition has Hadrian received?
Hadrian was named a Leader in GigaOm's 2024 Radar Report for Attack Surface Management and is recognised by Gartner as a representative vendor in the External Attack Surface Management category. The platform is used by enterprises, financial institutions, and government organisations across Europe.