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External Attack Surface Management (EASM)

From darkness to defence: Mapping your attack surface for ultimate visibility.

Introduction

EASM is the continuous discovery, monitoring, and assessment of an organisation’s internet-facing assets like domains, IPs, APIs, web applications, and cloud resources. It helps identify the unknown unknowns, or forgotten exposures that attackers could leverage, giving security teams full visibility and control over their digital footprint.

The EASM Issue

Enterprise organisations often struggle with limited visibility into their full digital footprint especially in complex, cloud-first environments. Shadow IT, abandoned assets, exposed APIs, and third-party services can unknowingly expand their attack surface. The challenge is compounded by the pace of digital transformation, where assets are spun up and down rapidly, making it difficult to track exposures in real time. This lack of visibility leaves critical openings for threat actors to exploit vulnerabilities before they’re even detected by internal teams.

Shadow IT

You can’t secure systems if they are unknown to your security team. Personal devices, uncontrolled workloads, and cloud-storage environments are all easy to deploy and will increase your attack surface.

Dynamic Nature of Assets

Company assets are continuously created, modified, and retired regularly. It is a real challenge to map and monitor these changes.

Complex Distributed IT Environment

The digital footprint is forever expanding, making it a challenge for companies to identify all external-facing assets. Websites, sub-domains, APIs and third-party integrations often evade basic mapping techniques.

Third-Party Risks

Companies often rely on third parties to help them scale their business and deliver wider services. If not mapped and assessed, these can lead to wider and visible security gaps in your environment.

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BlueFort External Attack Surface Management Benefits

Vulnerability identification

Automatically identifies known and unknown assets (e.g., domains, IPs, cloud services) that may be exposed to external threats.

Risk reduction

Uses risk-based analysis to highlight the most critical issues. Helps security teams focus efforts where they’ll have the greatest impact on reducing risk.

Incident response improvement

Continuous monitoring ensures vulnerabilities and misconfigurations are spotted and addressed quickly. Minimises the window of opportunity for attackers to exploit exposed assets.

Reputation protection

Reducing external exposures significantly lowers the likelihood of a breach. Avoids reputational damage, financial losses, and regulatory penalties.

What you need to know

Have more questions?

Speak to our EASM experts

Why work with BlueFort?

BlueFort is trusted for its impartial, expert advice, helping customers choose EASM solutions that truly fit their needs. One size doesn’t fit all. Some organisations benefit from broad platforms like CrowdStrike, while others require the targeted capabilities of Cycognito.

Whether you’re an enterprise seeking greater visibility, or an international legal firm looking for stronger assurance, BlueFort provides the right combination of products and services to accelerate value and strengthen your external security posture.

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