10 Best Attack Surface Management (ASM) Companies in 2025

Attack Surface Management (ASM) is a proactive cybersecurity discipline that helps organizations identify, analyze, and remediate all of their internet-facing assets and potential vulnerabilities.

It goes beyond traditional vulnerability scanning to find and continuously monitor unknown or unmanaged assets, such as rogue cloud instances, misconfigured APIs, and shadow IT, that attackers use as entry points.

In 2025, with the proliferation of cloud, SaaS, and remote work, ASM is essential for getting an accurate, real-time “outside-in” view of your digital footprint.

Why ASM Is Crucial In 2025

The modern attack surface is dynamic and constantly expanding. A recent report revealed that over 70% of organizations experienced a cyberattack from an unknown or unmanaged asset.

Attackers continuously scan the entire internet for these “blind spots” which are often overlooked by internal security teams.

ASM tools are designed to proactively find these hidden exposures, provide a risk-based view of the environment ...