Attack Surface Management

The cyber threat environment that organizations confront today is rapidly shifting, compelling cybersecurity teams and solutions to remain proactive against adversaries. Organizations must adeptly manage their attack surfaces to protect critical assets, a task made increasingly complex by the constant evolution of attack vectors. Attack surface management (ASM) is a pivotal practice that supports proactive cybersecurity strategies by reducing exposure to threats. Chief Information Security Officers (CISOs) are prioritizing portfolio consolidation, and ASM solutions offer an opportunity to centralize both internally managed and outsourced security functions.

The attack surface encompasses all potential entry points within an organization, including digital infrastructure of subsidiaries and partners—hardware, software, storage, networks, and user identities. It requires constant monitoring due to its dynamic nature. ASM strategies adopt an attacker's perspective, enhancing visibility of attack surfaces as perceived by hackers, which aids in emerging threat defense, vulnerability mitigation, and improvement in incident response. ASM solutions enable strategic resource allocation to high-risk areas.

ASM solutions typically include asset discovery, asset profiling and vulnerability assessment, risk prioritization, and continuous monitoring and remediation. Asset discovery identifies all components of the attack surface. Profiling collects detailed information about each component, while vulnerability assessment identifies weaknesses, facilitated by machine learning algorithms. Prioritization frameworks like NIST CVSS are used to evaluate risk levels and plan remediation activities. Continuous monitoring detects environmental changes and emerging threats, and remediation involves applying necessary security changes.

Innovative ASM vendors offer a variety of tools, including zero-trust architecture implementation, advanced visualization, integration with cyber threat intelligence (CTI) feeds, and automated ASM. These innovations enable organizations to analyze vast amounts of data to make strategic security decisions. ASM can reduce risk exposure, thus becoming integral to enterprise risk management strategies. It necessitates collaboration among security teams, IT operations, development teams, business units, and executive management for comprehensive attack surface understanding and effective security implementation. Emerging trends in ASM include cloud services, IoT, dark web monitoring, brand protection, DevSecOps integration, threat simulation, and regulatory compliance.

Overall, the ASM market is growing and evolving, with a mix of established and emerging vendors offering diverse solutions focused primarily on external ASM. The market will likely evolve towards more comprehensive solutions addressing both external and internal attack surfaces as enterprise needs become more complex.

• Organizations' attack surfaces include all possible entry points in their digital infrastructure, covering hardware, software, networks, and user identities.
• ASM helps identify and address misconfigurations, vulnerabilities, and unprotected digital assets.
• Some ASM vendors implement continuous red teaming to simulate attacks and identify vulnerabilities.
• Certain ASM solutions employ automated and continuous asset discovery and vulnerability assessments.
• CTI integration helps prioritize threats based on up-to-date intelligence, often using in-house and third-party sources.
• Dark web monitoring enables detection of organization-specific threat information, such as stolen credentials and intellectual property.
• Brand protection features in ASM can help identify disinformation campaigns, social media reconnaissance, and phishing attacks.
• ASM platforms may use machine learning to analyze large datasets, identifying patterns and anomalies that signal potential vulnerabilities.
• Some vendors offer manual and automated penetration testing as additional services.
• EASM and CAASM segments in ASM will likely converge to offer integrated internal and external attack surface solutions.

• "Attack surface management (ASM) enables proactive cybersecurity strategies, mitigating risks by reducing an organization’s exposure to potential attacks."
• "ASM takes the attackers’ point of view, allowing organizations to see their attack surfaces as hackers perceive them."
• "By gaining visibility into their attack surfaces, security teams can proactively defend against emerging threats, reduce vulnerabilities, and enhance incident response capabilities."
• "Round-the-clock monitoring and assessment is needed for due diligence."
• "As a discipline, ASM takes the attackers’ point of view. Some vendors describe their ASM services as continuous red teaming."
• "ASM enables deploying organizations to adopt a risk-based approach, allocating resources strategically to areas with the highest potential for compromise."
• "Continuous monitoring is essential to detect changes in the attack surface, new vulnerabilities, and emerging threats."
• "Innovative ASM vendors offer a variety of tools, including zero-trust architecture implementation and automated ASM."
• "By effectively monitoring and reducing the attack surface, organizations can minimize their overall risk exposure and improve their resilience against cyberattacks."
• "The combination of asset management, ASM, cyber insurance, and third-party risk management make an innovative and comprehensive offering."