UK firms urged to track hidden cyber attack surface

Many organisations do not have a full view of their external attack surface, according to DarkInvader, which links that gap to the way attackers now search for internet-facing weaknesses.

Its analysis found that 43% of UK businesses suffered a cyber breach or attack over the past year, rising to 69% among large organisations. It argues that many security teams still lack full visibility of internet-facing assets, even as phishing, credential exposure and externally exploitable vulnerabilities continue to increase.

The issue centres on the growing complexity of corporate technology estates. Cloud infrastructure, application programming interfaces, third-party integrations and rapidly deployed services have increased the number of systems that sit outside traditional network boundaries.

As these environments expand, assets can be created, changed or abandoned without being properly recorded or secured. That can leave unknown subdomains, exposed services, misconfigured cloud assets and leaked credentials outside the scope of internal monitoring.

This has changed how many attackers approach their targets. Rather than trying to break through internal defences directly, they can scan public-facing systems and data to identify potential entry points without alerting conventional tools.

In practice, an organisation may invest heavily in internal protection while still leaving a route open through systems it does not know it has. Initial access is often gained through assets that sit beyond the view of established security controls.

External focus

The shift has helped drive interest in External Attack Surface Management, or EASM, which aims to give organisations a continuous external view of their digital footprint. The approach focuses on identifying internet-facing assets and monitoring them for vulnerabilities, misconfigurations and other risks.

Unlike more traditional security models, EASM is designed around the perspective of an outside attacker. That means focusing not only on known systems, but also on assets that have been forgotten, deployed informally or introduced through suppliers and other third parties.

The problem is not simply one of technology spending. More broadly, DarkInvader argues, organisations have historically concentrated on protecting internal environments and responding to known vulnerabilities, while the current threat landscape demands a wider understanding of external exposure.

That shift reflects the wider spread of digital services across modern businesses. Companies now operate through a mix of internal systems, cloud services, public-facing applications and outside partners, making it harder to maintain a single accurate inventory of what is exposed to the internet.

Changing priorities

Security teams need to move from a reactive model to continuous exposure management, the company argues. In practice, that means understanding what attackers can see, identifying gaps in coverage and ranking risks according to how likely they are to be exploited in the real world.

Without that external view, even well-funded teams may be working from an incomplete picture of their own environment. The result can be a mismatch between where defensive tools are deployed and where attackers are actually looking.

DarkInvader describes its platform as an EASM service that provides visibility across internet-facing assets. It is designed to discover and map an organisation’s digital footprint, including unknown and unmanaged assets, and monitor them for vulnerabilities and changes.

The platform also examines open-source intelligence, dark web data and other external signals to identify issues such as exposed credentials, misconfigurations and supplier-related threats. That reflects a broader industry trend towards combining asset discovery with ongoing monitoring of the wider online environment around an organisation.

DarkInvader expects the attack surface management market to expand as digital environments become more complex and businesses seek better visibility into external risks. Its central argument is that understanding an organisation’s full external presence is becoming a core part of cyber defence rather than a specialist add-on.

Organisations must now account for assets they do not directly control and, in some cases, may not even know exist. In DarkInvader’s view, the ability to see and manage that full attack surface is increasingly the difference between preventing a breach and discovering it after the fact.