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Top 11 Attack Surface Management Software Solutions in 2025

Organizations attack surfaces continue to expand. With hybrid work, cloud sprawl, shadow IT (also shadow AI), constant code changes, and increasing third-party connections, organizations today face more external risks than ever before. In fact, studies show that 73% of security breaches now originate from unknown or unmanaged assets.

This is where Attack Surface Management tools come in. These platforms continuously scan, monitor, and help secure all internet-facing assets tied to your organization, from forgotten subdomains, insecure storage buckets, wide-open databases, to exposed APIs.

In this guide, we’ll walk you through the top 11 Attack Surface Management solutions in 2025, what they offer.

What is Attack Surface Management (ASM)?

Attack Surface Management is the process of continuously discovering, monitoring, and managing all the digital assets an organization has exposed to the internet.

Top 11 Attack Surface Management Tools in 2025

Here’s the detailed breakdown for our top eleven attack surface management tools for 2025 and beyond.

1. FortifyData

FortifyData demo

FortifyData is one of the best attack surface management tools that gives you visibility into both external and internal exposures. It finds assets across domains, APIs, cloud environments, and endpoints. The platform uses ML to analyze these various data points to calculate risk scores that also considers your operational business criticality for context (provided by you), using live threat intelligence to produce risk-based prioritization view.

The platform also integrates with governance, risk, and compliance (GRC) workflows. This makes it easier to audit, report, and manage vendor and third-party risks. You get everything in one place.

Read the full FortifyData review and others on Gartner Peer Insights.

Key Features

  • Continuous Asset Inventory: This feature scans the internet and your internal network 24/7. It automatically discovers new domains, cloud instances, and endpoints.
  • Real-Time Risk Scoring: Risk scores update dynamically as new threat data arrives related to operational criticality of assets. That means your priorities adjust instantly when attackers target your industry or technology.
  • Full Scope Visibility: The platform covers everything from external-facing APIs to internal servers, cloud environments and endpoints. It spots misconfigurations and forgotten infrastructure.
  • Vendor & Third-Party Risk Monitoring: FortifyData tracks risks associated with your vendors and suppliers. It assesses how externally exposed those third parties are.
  • Audit-Ready Reporting & Cyber GRC Integration: Built-in dashboards align with compliance frameworks like SOC 2, NIS 2, ISO 27001 or your preferred framework.

How the FortifyData methodology does this:

This isn’t repackaged Shodan data with an nmap scan like you might find with other. How do we do it?

Simple. Put in your domain, and the FortifyData platform does the rest.

We start with your domain, then spider out from there for subdomains, associated domains and verify via DNS to develop and validate your asset footprint (cutting down on false positives).Then we will fingerprint each asset, all ports and services, not just the common ones, to identify vulnerabilities and we enrich this process with active cyber threat intelligence to alert you to active KEVs, ransomware linked vulnerabilities and active threats. All from starting with your domain. If you have additional domains or IPs not publicly accessible, you can add those too.

fortifydata-dashboard-asm-tight
Image Source: FortifyData ASM dashboard inventory of assets.
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Additional Modules that the FortifyData automated Cyber GRC platform provides:

Why FortifyData for Attack Surface Management?

If you’re looking for a complete, reliable, and continuously updated ASM solution that shows you exactly what an attacker would see, you’ll be pleased with FortifyData and their focus on accurate data with low false positive and misattributions.

It gives you full visibility, helps prioritize real threats, and updates risk levels as new threats emerge. The best part is it does all that in one clean dashboard.

2. CyCognito External Attack Surface Management

CyCognito External Attack Surface Management

CyCognito gives you an attacker’s view of your full digital footprint, including unknown assets and those outside IT’s control. It continuously maps your business structure to find hidden exposure.

With AI and active testing, it helps you discover the critical issues that matter most right now. It’s built to scale for large, complex organizations. CyCognito automates thousands of tests per asset and ranks them using threat intelligence, ensuring you focus on real risks.

Key Features

  • AI-Powered Discovery: Finds both known and shadow assets across your structure.
  • Active Security Testing: Validates vulnerabilities instead of just scanning passively.
  • Contextual Risk Insight: Shows exposure from an attacker’s viewpoint with business context.
  • Supply Chain Monitoring: Flags risky third-party or cloud software exposures.

3. Microsoft Defender External ASM

Microsoft Defender ASM tool continuously indexes your Azure, Microsoft 365, and hybrid assets to identify exposed services like domains and APIs. It uses Microsoft’s own discovery logic, starting from known entities and recursively uncovering connected infrastructure.

Exposures and risk data show up directly in Defender and Sentinel dashboards, allowing faster threat detection and response with your existing Microsoft security stack.

Key Features

  • Microsoft Ecosystem Discovery: Finds cloud and on-prem assets linked to your Microsoft identity and environment.
  • Dynamic Asset Classification: Automatically organizes assets by recent or historical relevance.
  • Dashboard & Filtering Tools: Helps you focus on specific asset types or high-risk items.
  • Continuous Monitoring: Alerts you immediately when new assets or exposures appear.

4. Tenable Attack Surface Management

Tenable continuously scans for internet-facing assets, such as domains, servers, APIs, and updates your inventory automatically when new exposures emerge. It ties in directly with Tenable’s vulnerability and compliance tools for unified risk visibility.

With filters by asset owner or business group, you can sort and prioritize risks based on organizational context. Its seamless integration with Tenable.io also means you can move from exposure to remediation planning in minutes.

Key Features

  • Automated External Asset Discovery: Keeps your asset list current without manual work.
  • Prioritized Risk Scoring: Highlights vulnerabilities most likely to be exploited.
  • Deep Tenable Ecosystem Integration: Works with Tenable’s threat and audit tools.
  • Metadata Filtering: Helps group assets by department, location, or risk level.

5. CrowdStrike Falcon Discovery (ASM)

CrowdStrike Falcon Discovery (ASM)

Crowdstrike combines ASM with its endpoint protection to surface exposed assets captured via devices. This unified approach finds external risks tied to endpoints you already protect.

It also maps attack paths using the Falcon Threat Graph, showing vulnerabilities connected to real threat campaigns. The result: exposure visibility plus threat contextualization in one platform.

Key Features

  • Endpoint-Linked Discovery: Identifies assets based on actual device telemetry.
  • Threat Graph Analysis: Reveals which exposures align with known attack vectors.
  • Cloud Exposure Mapping: Detects risks in SaaS and infrastructure tied to endpoints.
  • Low-Impact Deployment: Lightweight agents, minimal configuration needed.

6. Trend Vision One

Trend Vision One

Trend Vison One ASRM is an attack surface management software that continuously uncovers internal and external assets. It combines ASM with XDR, threat detection, and vulnerability prioritization in a single console. The platform uses AI and ML to surface actionable risk insights and recommended fixes.

It’s ideal for teams wanting both discovery and automated remediation playbooks. Dashboards show attack paths, risk scores, and compliance status, so security can move fast on what matters.

Key Features

  • Unified ASRM + XDR: Covers exposure and threat detection in the same view.
  • AI‑Driven Risk Insight: Prioritizes remediation tasks using ML-generated recommendations.
  • Cloud & Identity Visibility: Tracks assets in AWS, Azure, GCP plus identity posture.
  • Policy Automation: Built-in playbooks automate common remediation workflows.

7. Axonius (CAASM with ASM Layer)

Axonius (CAASM with ASM Layer)

Axonius provides a unified asset intelligence platform that combines internal and external visibility, effectively serving as one of the best CAASM tools with ASM coverage. It integrates data from identity systems, endpoints, software, and cloud accounts, normalizes it, and presents a single source of truth.

The platform enables query-based risk analysis and automated enforcement of remediation policies. It’s especially useful for eliminating blind spots and managing compliance across large environments.

Key Features

  • Centralized Asset Intelligence: Aggregates and cleans data from hundreds of integrations.
  • Clean, Deduplicated Inventory: Removes confusion with normalized and enriched asset data.
  • Flexible Risk Queries: Search and filter for gaps, configuration drift, or suspicious assets.
  • Automated Policy Enforcement: Map conditions to actions across security, IT, and compliance tools.

8. Palo Alto Networks Cortex Xpanse

Palo Alto Networks Cortex Xpanse

Cortex Xpanse from Palo Alto Networks helps organizations automatically discover, assess, and monitor their internet-exposed assets. It continuously scans the global internet to detect shadow IT, risky services, and misconfigured systems before attackers do.

The platform tracks all assets tied to your brand across cloud, on-premise, subsidiaries, and third-party vendors. It’s particularly useful for enterprises with complex digital footprints and frequent M&A activity.

Key Features

  • Global Internet Scanning: Finds all internet-facing assets, even unknown or untracked ones.
  • Shadow IT Detection: Uncovers unauthorized cloud apps, domains, or servers.
  • Risk Scoring: Assigns priority based on exploitability and exposure.
  • Automated Remediation Tickets: Sends alerts to the right internal owners.

9. ImmuniWeb Discovery

ImmuniWeb Discovery

ImmuniWeb Discovery is an AI-powered attack surface management platform that helps you uncover every exposed digital asset. It finds forgotten subdomains, unprotected APIs, misconfigured services, and even leaked credentials across your online presence.

It also monitors third-party risks, checking your vendors for vulnerabilities that might affect you. With clear reports and guided remediation, ImmuniWeb helps security teams stay one step ahead.

Key Features

  • AI-Driven Asset Discovery: Unmasks hidden infrastructure and cloud services.
  • Leak Detection: Finds exposed data endpoints and credential leaks.
  • Vendor Risk Scoring: Assesses third-party exposure and compliance gaps.
  • Guided Remediation Advice: Gives actionable steps for securing flagged assets.

10. SpectralOps

SpectralOps

SpectralOps is a developer-first security attack surface monitoring platform that helps you find secrets and credentials hiding in your code. It automatically scans your repositories, pipelines, and cloud configurations to detect risks before they become breaches.

If your team pushes code often, Spectral ensures security isn’t left behind. The platform integrates directly into your CI/CD process. That’s why, you get real-time alerts about exposed tokens, keys, or misconfigurations

Key Features

  • CI/CD Secrets Detection: Finds API keys, tokens, and credentials committed in code.
  • Misconfiguration Alerts: Flags weak or dangerous settings in infrastructure code.
  • Dev-Focused Dashboard: Gives developers clear visuals and actionable fixes.
  • Real-Time Slack/Jira Notifications: Notifies your team instantly about critical findings.

11. UpGuard

Upguard has an offering to assess your external attack surface and monitor how exposed your company is to cyber threats. It shows you every internet-facing asset and highlights risks like open ports, bad configurations, or expired certificates.

This platform scores your security health and that of your vendors. You can see how you stack up against competitors and stay audit-ready with exportable reports.

Key Features

  • Continuous Exposure Monitoring: Flags misconfigurations across domains, IPs, and external services.
  • Third-party Risk Assessment: Scores exposure across your vendor ecosystem.
  • Security Rating Dashboard: Compares your digital hygiene against peers in your industry.
  • Actionable Risk Insights: Prioritized alerts for policy gaps or configuration errors.

Summing Up: Which One Is Best For You?

A key element to consider is the asset detection, footprinting, and assessment methodology. Some might package up shodan data + nmap scans and call it a day. Some may employ vulnerability scanners. You’ll need to investigate their methodologies and then determine how that fits with your organization. Will this be the primary attack surface management tool? Will it be a redundant “second set of eyes”? Is it needed to monitor shadow IT risks or a foundation for developing a CTEM strategy?

Choosing one out of the various Attack Surface Management tools depends on your specific needs. For instance, if you’re a small team, you might want something lightweight with quick onboarding. Some tools focus more on external assets, others dig deeper into internal systems.

If you’re looking for a complete, reliable, and continuously updated ASM solution that shows you exactly what an attacker would see, you’ll be pleased with FortifyData and their focus on accurate data with low false positive and misattributions.

It gives you full visibility, helps prioritize real threats, and updates risk levels as new threats emerge. The best part is it does all that in one clean dashboard.

Stop thinking and try out FortifyData’s Attack Surface Management solution today!

FAQs

Attack Surface Management looks at all your exposed digital assets like domains, IPs, APIs, and cloud services, like an attacker would. Meanwhile, vulnerability scanning typically focuses on finding known software flaws in systems.

Yes. Firewalls and antivirus tools protect what you know exists. ASM reveals assets you may not know about, such as shadow IT, misconfigured servers, or forgotten subdomains, so you can secure them before attackers find them.

ASM tools discover domains, subdomains, IP addresses, APIs, cloud services, exposed ports, third-party vendors, and even leaked credentials. These are the entry points attackers can exploit if left unmonitored.

Start by identifying what assets you want to monitor, how frequently, and what integrations you need. Look for a tool that offers automatic discovery, risk scoring, and integrations with your existing tools. Free trials or demos are also a good way to compare platforms.

Resources

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