Continuous Threat Exposure Management (CTEM) Epxlained

What is continuous threat exposure management ?

Continuous threat exposure management (CTEM) is a framework for proactively managing and mitigating threat exposure through an iterative approach that emphasizes building structured organizational processes in addition to leveraging security tools. 

In this article, we’ll walk through CTEM, its key components, and a five-step implementation strategy to reduce risk exposure, improve prioritization, and lead to stronger vulnerability and exposure management.

Understanding continuous threat exposure management

With traditional vulnerability management, security teams carry out their functions in relative silos, focusing less on the “why” and “how” of what is discovered through vulnerability assessment. In contrast, CTEM is a proactive approach that helps organizations:

• Scope the types of assets the organization cares about the most
• Identify the assets in scope and the various types of exposures on these assets 
• Validate the actual exploitability of identified exposures and the effectiveness of predefined organizational responses
• Mobilize the organization for appropriate response 
• Monitor and iterate to refine the program 

CTEM follows an iterative approach that continuously refines the organization’s security posture. By following this approach, organizations can formulate an actionable security plan that management can understand, business units can get behind, and technical teams can use as a guideline.

The 5 steps in the CTEM cycle

Gartner’s How to Manage Cybersecurity Threats, Not Episodes proposes a five-step strategy to implement CTEM.

Step #1: Identify initial scope

Most organizations can’t keep up with the digital velocity of asset surface growth. In this step, the organization needs to decide which types of assets it cares about most. When starting a CTEM program, organizations should consider using the following as their initial scope:

• External attack surface: This includes an organization’s internet-facing assets that an attacker may target to gain entry. 
• Software as a service (SaaS) security posture: Due to increasing remote work, many organizations receive and send business data to third-party APIs and applications that are externally hosted.

Step #2: Discover assets and assess risks

Discovery involves identifying individual assets in the category determined in the scoping step above and assessing them for exposures. The exposures included should go beyond Common Vulnerabilities and Exposures (CVEs) and include misconfigurations and other weaknesses. 

Of course, identifying assets based on an accurate business risk scope is far more valuable than a broad discovery that identifies numerous assets and vulnerabilities.

Step #3: Prioritize the threats that matter

Prioritization involves evaluating the importance of identified issues. This stage is crucial for cutting through the noise of endless security vulnerabilities and focusing on the risks that matter most.  Organizations should go beyond CVEs and consider exploit prevalence and factors particular to the organization, such as available controls, mitigation options, business criticality, and risk appetite.

A mature prioritization process ranks exposures based on urgency, exploitability, business impact, and active threats, ensuring security teams focus on real risks rather than theoretical ones. Attack path analysis helps identify chokepoints where a single fix can neutralize multiple threats, while AI-driven risk scoring aligns security efforts with real-world attack scenarios

Step #4: Validate exploitability and security response

The validation step utilizes tools such as attack path simulations, breach and attack simulations, or other controlled simulations to validate the exploitability of the prioritized exposures and their impact on critical systems. It confirms whether vulnerabilities can be exploited and whether the current defense plan will mitigate them. This process includes executing simulated attacks and verifying that response plans are triggered correctly.

The validation step also involves defining the triggers and signals that will initiate the response plan. Since a response plan may involve drastic steps — such as removing access to key assets or locking down the network — it is important to evaluate when such a response would be necessary. 

Step #5: Mobilize remediation teams

The goal of the “mobilization” effort is to help teams act on CTEM findings by streamlining approvals, implementation processes, and mitigation deployments. The responsibility and the consequence for remediation often fall on teams beyond the security team; there are often many ways to fix issues, and each fix may have a different business impact. It is important to build on initial tool automation to create a structured and coordinated remediation process. This mobilization step reduces delays in operational workflows and implementation processes, ensuring quick response times. 

Benefits of implementing CTEM

Organizations that adopt a CTEM approach experience several benefits. These include:

• Reduced risk exposure: Using continuous monitoring to identify threats before they can impact business operations helps reduce risk exposure. 
• Improved prioritization: CTEM helps organizations understand the severity of each threat so they can determine which ones require urgent attention and resources.
• Proactive security posture: The proactive approach of CTEM is seen particularly in the scoping and discovery steps, which work continuously to address emerging threats.
• Stronger incident response: The simulated attacks and automated remediation steps defined during the validation phase verify the effectiveness of response plans and their triggers, empowering teams to respond faster to incidents.

Proactive security with CrowdStrike

CrowdStrike Falcon® Exposure Management helps security teams operationalize and streamline their CTEM programs throughout the entire life cycle, from scoping, discovery, and prioritization to validation and mobilization.

• Scope with Falcon Exposure Management's native external attack surface management (EASM) capabilities and CrowdStrike Falcon® Shield SaaS security
• Discover with Falcon Exposure Management's unparalleled asset visibility, and perform full exposure assessments for vulnerabilities, misconfigurations, risky browser extensions, and more
• Prioritize using CrowdStrike’s proprietary ExPRT.AI predictive scoring, which is built on exploit intelligence and automated asset criticality
• Validate through Attack Path Analysis, which maps the unknown and demonstrates the actual exploitability of exposures in your particular environment
• Mobilize with deep security context; native security orchestration, automation, and response (SOAR) integration; and quick remediation actions

Falcon Exposure Management is a powerful vulnerability and risk management solution that offers unparalleled asset discovery and understanding, extensive exposure assessment, attack path analysis, and consolidated visibility across the entire attack surface. It utilizes the unified, lightweight CrowdStrike Falcon® agent, which enables real-time, maintenance-free vulnerability assessment. Moreover, CrowdStrike’s predictive ExPRT.AI prioritization model allows teams to allocate their limited resources strategically and focus on the risk exposures that are most likely to be exploited by adversaries.