Building Operational Resilience with Continuous Threat Exposure Management (CTEM)

What Is CTEM?

Gartner defines CTEM as an iterative and integrated approach to prioritizing risk mitigation and continuously refining security posture. CTEM is not a single product, but rather a continuous program aimed at reducing the likelihood and impact of breaches.

Every organization faces more security challenges than it can address, so meaningful improvements in security posture require a shift in approach. That shift begins with how organizations define the scope of their assessments and how they collaborate on remediation efforts.

CTEM supports these efforts by guiding enterprises through more effective risk reduction cycles and enabling faster, more coordinated remediation.

Why Does CTEM Matter?

With threats evolving faster than traditional security assessments can keep up, CTEM enable organizations to proactively manage cyber risk by continuously identifying, assessing, and mitigating threats and vulnerabilities across their digital footprint, giving enterprises the visibility, control, and agility they need to stay ahead of modern cyber threats before they cause damage.

It’s a Strategic Shift, Not Just a Tool

Gartner emphasizes that CTEM is a program – a convergence of risk, threat, and actionability – that enables organizations to move from reactive security postures to proactive exposure management, helping teams focus on what truly matters.

Business-Aligned Risk Reduction

CTEM helps security teams prioritize threats based on business impact, not just technical severity. This ensures that remediation efforts are aligned with what’s most critical to the organization.

Operational Efficiency

By continuously identifying and prioritizing only the most critical exposures, CTEM reduces alert fatigue and helps focus resources where they’re needed most.

Validation of Security Controls

CTEM enables organizations to test and validate whether their existing defenses are effective against real-world attack scenarios.

Proven ROI and Breach Reduction

According to recent industry data, organizations that adopt CTEM practices can reduce breach risk by up to 69% and achieve ROI of 150–300% through better threat detection and faster remediation.

The Five Steps of CTEM

The primary goal of a CTEM program is to create actionable remediation and improvement plans that are clear to business leaders and executable by architecture teams. Organizations implementing CTEM use tools to inventory and classify assets and vulnerabilities, simulate attack scenarios, and conduct posture assessments using various technologies.

A typical CTEM cycle includes five key stages: scoping, discovery, prioritization, validation, and mobilization:

Gartner^®, “Use Continuous Threat Exposure Management to Reduce Cyberattacks”, 16 July 2025
GARTNER is a registered trademark and service mark of Gartner, Inc. and/or its affiliates in the U.S. and internationally and issued herein with permission. All rights reserved.

1. Scoping

Define which assets, networks, and applications fall under your CTEM program. Traditional vulnerability management often excludes IoT, OT, and shadow IT assets-yet these remain high-value targets for attackers.

Quick tip: Collaborate early with stakeholders from security, IT, and business units to define what’s in scope based on real risk, not just asset count.

2. Discovery

Identify exposures beyond CVEs: misconfigurations, policy violations, and risky behaviors.

Quick tip: Through continuous monitoring of the network, you can determine every asset’s configuration, patch level, and security posture in real-time.

3. Prioritization

Determine which vulnerabilities matter most to your organization’s risk profile.

Quick tip: Correlate asset data with threat intelligence to rank exposures based on exploitability, criticality, and business context.

4. Validation

Test and validate the impact of potential threats and confirm the effectiveness of current controls.

Quick tip: Evaluate the effectiveness of your organization’s security controls to ensure that they are correctly implemented, operating as intended, and producing the desired outcome.\

5. Mobilization

Tune security posture continuously with fully automated Zero Trust security policies and dynamic compliance enforcement with closed-loop feedback from integrated systems and tools.

Quick tip: With policy-based automation, you can quarantine vulnerable devices, apply security patches, or send tickets to ITSM tools like ServiceNow to close the gap between detection and action.

Forescout eyeSentry Helps Enterprises Operationalize an Effective CTEM Program

Forescout eyeSentry is designed to help enterprises continuously identify, assess, and reduce cyber risk across all connected assets – managed or unmanaged, IT, OT/ICS, IoT, and IoMT. Unlike traditional vulnerability management tools that focus narrowly on known CVEs, Forescout eyeSentry provides real-time visibility into the full attack surface, factoring in asset criticality, active exploits, misconfigurations, and business impact to prioritize remediation efforts effectively.

The solution integrates key capabilities such as persistent asset intelligence, automated threat detection and response, and risk scoring into a unified, cloud-native platform that is easy to deploy and configure. It supports proactive risk reduction by enabling security teams to swiftly discover and close exposure gaps, streamline incident response, and reduce mean-time-to-resolution (MTTR). Features like passive discovery for IoT and medical devices, and support for compliance frameworks further enhance their value in complex, regulated environments.

Mapping Forescout eyeSentry Capabilities to the CTEM Framework

Key Forescout eyeSentry Differentiators

• Agentless Visibility: Real-time discovery and classification across managed and unmanaged devices, enriched with behavioral and contextual data
• AI-Driven Threat Detection: Uses machine learning to detect anomalies, lateral movement, and policy violations
• Automated Remediation: Integrates with EDR, SIEM, and ITSM tools to orchestrate response actions and close the loop on remediation
• Cross-Domain Coverage: Supports IT, OT, IoT, and cloud environments with a single platform

Conclusion

Cybersecurity teams struggle to contextualize information from multiple siloed security tools. Organizations need a simplified way to maintain real-time and persistent asset intelligence for every device – managed or unmanaged, physical or virtual, including operational technology and industrial control systems (OT/ICS), Internet of Things (IoT) devices and specialty subsets like medical devices. Without this capability, organizations face high operational overhead, performance issues, downtime, and risk of security breaches due to weakness in their security posture, caused by lack of asset intelligence.

By aligning with the Gartner-defined CTEM lifecycle – scoping, discovery, prioritization, validation, and mobilization – Forescout eyeSentry empowers organizations to move from reactive to proactive security operations. It helps cybersecurity teams contextualize threats, reduce operational overhead, and make data-driven decisions that strengthen enterprise resilience.