What is an Attack Surface?
The Attack Surface represents the total number of entry points through which an attacker can attempt to gain unauthorized access to a system, network, or organization. It includes all digital, physical, and human attack vectors, such as exposed services, applications, endpoints, and user interactions.
Modern attack surfaces have expanded significantly due to cloud adoption, remote work, and Shadow IT. This includes external exposure managed through External Attack Surface Management (EASM) and internal exposure related to Identity and Access Management (IAM).
What is an Attack Surface used for?
Understanding the attack surface is critical for identifying Vulnerabilities and prioritizing risk mitigation efforts. It helps organizations assess their exposure to threats such as Exploits, Phishing, and Brute Force Attack attempts.
Reducing the attack surface is a key principle of Zero Trust and Defense in Depth strategies. Organizations use tools like Cyber Asset Attack Surface Management (CAASM) and Continuous Threat Exposure Management (CTEM) to continuously monitor and minimize risk.
