External attack surface management (EASM) is the continuous practice of discovering, mapping, and monitoring every asset your organisation exposes to the internet — subdomains, open ports, cloud storage buckets, APIs, third-party services, and more — so you can find and fix vulnerabilities before attackers do. Unlike a one-time penetration test, EASM runs continuously, because your attack surface changes every day.
Your external attack surface is everything an attacker can see and interact with from outside your network. That includes:
Most organisations are surprised by the sheer size of their own attack surface. Shadow IT, rapid cloud adoption, and the rise of AI agents have all expanded it far faster than security teams can track manually.
A mature EASM process follows four stages:
Traditional vulnerability scans happen quarterly or annually. But infrastructure changes constantly — a developer pushes a new service, a misconfigured S3 bucket goes public, a dependency ships with a known CVE, or an AI tool your agent depends on silently changes its behaviour. By the time the next scheduled scan runs, attackers may have already exploited the window.
EASM closes this gap by treating discovery and monitoring as an always-on process rather than a periodic project. The moment something new or dangerous appears in your external footprint, you know about it.
As organisations ship AI agents that call external tools, APIs, and Model Context Protocol (MCP) servers, those connections become attack surface too. An AI agent that has access to your codebase, email, or internal APIs can be manipulated through prompt injection or a malicious tool update — a "rug pull" where a trusted tool silently changes to a dangerous one. This is a blind spot that conventional EASM tools were not designed to see, and it is growing rapidly.
Pinaka is an agent-security and external attack surface management platform built around one core idea: continuous memory. Everyone scans once. Pinaka maps every tool, prompt, and MCP server your agents can reach, remembers it, and catches the moment one silently turns dangerous — the rug pull no point-in-time scan can see.
Here is what Pinaka brings to EASM specifically:
Pinaka also offers a free security check on your domain — under a minute, no signup required. It is a fast way to see your external exposure right now.
Get started: pinaka.sh
A vulnerability scan tests a defined list of assets you provide, typically on a scheduled basis. EASM starts with discovery — finding assets you may not know you own — and then monitors them continuously. The key difference is that EASM catches new exposure the moment it appears, not at the next quarterly audit.
At minimum, daily. Best-in-class platforms like Pinaka re-scan every 6 hours because infrastructure changes that quickly. A new subdomain, a misconfigured cloud bucket, or a silently updated AI tool can appear and be exploited in hours.
Yes, significantly. Every external tool, API, or MCP server an AI agent can call is a potential entry point. If that tool changes its behaviour — intentionally or through compromise — your agent can be manipulated to take harmful actions. This "rug pull" risk is invisible to conventional EASM tools but is specifically what Pinaka is designed to detect.
EPSS (Exploit Prediction Scoring System) estimates the probability that a given CVE will be exploited in the wild within 30 days. Combined with CISA's Known Exploited Vulnerabilities (KEV) list, it lets you prioritise patching based on actual attacker behaviour rather than theoretical severity alone — cutting through the noise of thousands of theoretical vulnerabilities to focus on what attackers are actually using right now.
No. Attackers do not filter targets by company size — they scan the entire internet automatically. Any organisation with cloud assets, subdomains, or public-facing services has an external attack surface that needs managing. Startups shipping AI agents are particularly exposed because their infrastructure moves fast and the tooling they depend on can change without notice.