Understand What Attackers See About Your Organization - and Act First
External Attack Surface Monitoring provides continuous oversight of your organization’s internet-facing exposure. Certificates, domains, ports, vulnerabilities, APIs, and cloud assets – all in one place.
Every organization leaves a digital footprint online – open ports, certificates, subdomains, APIs, and cloud resources. Most companies are unaware of how large this footprint is or which elements are vulnerable. Meanwhile, cybercriminals continuously and automatically scan infrastructures to find the weakest entry points. External attack surface monitoring reverses this asymmetry – giving your security team full visibility into what a potential attacker can see.
What Is External Attack Surface Monitoring?
External attack surface monitoring is a continuous, automated assessment of your organization’s internet-facing exposure – everything visible and accessible from the public internet. Unlike internal security audits, it takes the attacker’s perspective, identifying assets and vulnerabilities that can be exploited without access to internal networks.
Unlike one-time assessments, it operates continuously – detecting new risks as soon as they appear.
What Does External Attack Surface Monitoring Cover?
The service continuously monitors all key areas of your external attack surface, including:
- SSL/TLS certificates monitoring – detecting expired, misconfigured, or suspicious certificates that could enable man-in-the-middle attacks.
- Typosquatting domains and subdomains – identifying fake domains impersonating your organization for phishing and fraud.
- Port scanning – continuous monitoring of open ports and exposed services accessible from the internet.
- Service availability monitoring – ensuring continuity of critical services with instant alerts on anomalies.
- Vulnerability monitoring, including:
- XSS – Cross-Site Scripting vulnerabilities in web applications
- HTTP Request Smuggling – weaknesses in HTTP request handling
- SSL/TLS – encryption protocols configuration analysis
- Cloud exposure – misconfigured cloud resources and public access risks
- Password Auditor – weak authentication and password policy gaps
- API security – monitoring internet-facing APIs for vulnerabilities
- Website security – continuous assessment of web applications
Why Is External Attack Surface Monitoring Necessary?
IT environments change constantly – new subdomains, cloud services, and applications are deployed every day. Every change can unintentionally expand the attack surface with unsecured assets. At the same time, attackers use automated tools to scan the internet at scale – identifying vulnerable systems within minutes of exposure.
Continuous monitoring enables organizations to:
- See their infrastructure through the eyes of an attacker - identify assets and vulnerabilities visible from the outside.
- Respond in real time with immediate alerts on new exposures.
- Protect brand and reputation by detecting phishing and typosquatting domains early.
- Maintain service continuity by tracking expirations and misconfigurations.
- Meet regulatory requirements - NIS2 and DORA require external attack surface management.
Who Is External Attack Surface Monitoring For?
This service delivers the greatest value to organizations that:
- Maintain a significant online presence with multiple domains, subdomains, APIs, and web applications.
- Operate in cloud environments and need visibility into external exposure.
- Are subject to regulatory frameworks such as NIS2, DORA, or PCI-DSS.
- Lack a complete inventory of internet-facing assets.
- Have experienced phishing or typosquatting incidents and want to prevent recurrence.
Explore Our Other Services
SOC – Security Operations Center
With us, you gain continuous security monitoring that enables rapid detection and mitigation of threats through 24/7 supervision of your systems and networks.
You also benefit from advanced behavioral analytics, enabling real-time anomaly detection and threat identification.
SIEM – Security Information and Event Management
Every organization generates thousands of security events daily. Without the right tools, most go unnoticed until it’s too late. SIEM aggregates data from across your infrastructure, correlates events, and identifies real threats before they escalate into incidents.
Want to Know Your Real Attack Surface?
Talk to our experts and discover what your infrastructure exposes to the internet.
We respond within 24 hours.