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Each Monday, the Tenable Exposure Management Academy provides the practical, real-world guidance you need to shift from vulnerability management to exposure management. In this blog, we share three challenges cybersecurity leaders say exposure management helps them solve. You can read the entire Exposure Management Academy series here. Traditional vulnerability management is undergoing a transformation. The core cybersecurity discipline is evolving into exposure management, which is built on a broader, more strategic approach to identifying, prioritizing and mitigating risk. Modern IT environments have long been evolving beyond the on-premises data center to include cloud infrastructure, mobile devices, internet-of-things (IoT) systems and operational technology (OT). To get a close look at this shift, the Tenable Exposure Management Academy regularly interviews cybersecurity leaders around the world. Our goal is to gain insights into their real-world experiences making the shift from traditional vulnerability management to exposure management. We conduct these discussions on the condition of anonymity. This blog reveals the three key challenges they're solving with cyber exposure management.The three challenges exposure management addressesThe leaders we spoke with want to do more than just track vulnerabilities. They want to understand and reduce real-world cyber risk across their expanding attack surfaces. Exposure management empowers them to tackle these three challenges:1. Lack of attack surface visibilityFor effective risk management, the leaders we spoke with are seeking a complete, unified view of all assets and their associated threat exposures across diverse environments. Visibility is essential because security teams can’t protect what they can’t see. In our discussion, a security leader working at a distributor noted that many organizations struggle with asset ownership and accountability in expansive environments. "Sometimes, if you have a vulnerability happening, you just need to know who owns it,” the leader pointed out. “But no matter who owns it, we need to track it. We didn’t have a lot of visibility on that and we needed to know in order to effectively manage vulnerabilities.”Security exposure management provides visibility beyond traditional siloed IT assets, including:Cloud environments (including public, private, multi-cloud and hybrid) Mobile and remote endpoints Containers and microservices OT and industrial control systems Third-party and supply-chain integrationsThe key: With the right exposure management strategy, you can consolidate and standardize security data from multiple tools and environments, ensuring every detail is correct (including asset ownership), while reducing blind spots and improving response times.2. Difficulty prioritizing remediation An important point to remember: Not all vulnerabilities pose the same level of risk. But determining how much risk any vulnerability presents requires context specific to your environment. You need to understand who or what has access to that asset, their privileges and how critical the asset is to business functions. Traditional vulnerability management can’t help you connect these dots for effective risk prioritization. When your security teams are overwhelmed by thousands of potential issues, they can’t effectively guide their IT counterparts tasked with remediation.Exposure management in cybersecurity provides the additional context needed to practice risk-based vulnerability management, focusing remediation on the vulnerabilities with greatest potential impact in your unique environment.Exposure management helps you understand whether bad actors are actively using a vulnerability in attacks (we call this “exploitability”), how important the affected system is to your organization (we call this “asset criticality rating”) and how an attacker could exploit a vulnerability in real-world scenarios (also known as “potential attack pathways”).As a security leader for an industrial real estate firm explained, the challenge is not just fixing vulnerabilities but also measuring security progress in a meaningful way. "We're trying to move to a risk-type of reporting instead of ‘You fixed a thousand exposures,’” this security leader told us. “Say you have 10,000 exposures and the team knocks out 2,000 in a month. But Microsoft releases 3,000 more. Now you have 11,000. What did you actually accomplish? We have to shift to a risk approach."The key: Risk-based exposure management ensures security teams focus on what matters most, rather than being buried under an ever-growing vulnerability backlog.3. Staying stuck in reactive modeExposure management introduces a new way of thinking about cybersecurity. Instead of staying in reactive mode, responding to each new incident as it arises, continuous exposure management enables your teams to practice proactive security. You can anticipate potential attack scenarios and implement security controls to mitigate threats before attackers exploit them.What does proactive cybersecurity look like? Here are three requirements:Attack path analysis to identify potential ways attackers could move laterally through your networkAutomated threat modeling to simulate potential breach scenariosPre-emptive security controls such as segmentation, access restrictions and zero-trust architecturesOne leader emphasized an important point: Cyber risk requires a shift in mindset and organizational culture."We’re quite reactive,” the security leader said. “And because we’ve been very manual, we needed a tool to help us get to the next stage. That means more automation to ease our workload so we can focus on more value-added work — like educating stakeholders to prevent repeat mistakes."The key: By embedding best practices for cyber exposure management into daily operations, you can minimize risk before attackers can take advantage of vulnerabilities.TakeawaysMaking the shift and practicing exposure management vs vulnerability management reflects a broader evolution in cybersecurity that aims to move from reactive security posture management to proactive risk management. Leaders are tackling the three key challenges — lack of attack surface visibility, difficulty prioritizing remediation and staying stuck in reactive mode — by embracing exposure management to build a more resilient security posture that aligns with business priorities.
Analysis Summary
# Best Practices: Adopting Risk-Based Exposure Management
## Overview
These practices focus on evolving cybersecurity strategy from traditional, reactive vulnerability management (focusing merely on closing tickets) to a proactive, risk-based approach known as Exposure Management. This shift aims to improve visibility, optimize remediation efforts based on actual business risk, and transition security operations from reactive incident response to proactive threat anticipation.
## Key Recommendations
### Immediate Actions
1. **Shift Reporting Metrics:** Immediately begin transitioning security reporting away from volume-based metrics (e.g., "We fixed 2,000 exposures") toward risk-based metrics that reflect the reduction of actual, exploitable risk.
2. **Identify Critical Attack Paths:** Utilize current tooling (if available) or manual analysis to identify the most critical, multi-step attack paths that could lead to significant business impact.
3. **Acknowledge Reactive State:** Conduct an internal review to quantify how much security effort is currently dedicated to reacting to new incidents versus proactive threat mitigation.
### Short-term Improvements (1-3 months)
1. **Implement Attack Path Analysis:** Adopt or deploy tools capable of performing attack path analysis to map potential lateral movement threats across the environment.
2. **Introduce Automated Threat Modeling:** Begin integrating automated threat modeling processes to proactively simulate various breach scenarios based on known vulnerabilities and configurations.
3. **Automate Workload Reduction:** Identify manual, repetitive tasks contributing to the reactive workload and prioritize the adoption of automation technologies to ease the burden on analysts.
### Long-term Strategy (3+ months)
1. **Embed Exposure Management in Daily Operations:** Formalize processes where cyber exposure management best practices are central to daily security and IT operations, aiming to minimize risk before exploitation.
2. **Educate Stakeholders on Risk Context:** Develop targeted educational programs for IT, development, and executive stakeholders to ensure they understand security efforts in the context of business risk, preventing repeat mistakes that lead to new exposures (e.g., insecure deployments).
3. **Implement Pre-emptive Security Controls:** Systematically deploy and enforce controls designed to block common attack paths, such as network segmentation and stricter access restrictions, based on threat modeling outcomes.
## Implementation Guidance
### For Small Organizations
- **Focus Automation on Visibility Gaps:** Prioritize tools that consolidate visibility across assets (Cloud, On-Prem, OT/IoT) to establish a baseline attack surface inventory, as disparate visibility often fuels reactive work.
- **Adopt Risk Prioritization:** Even without advanced tooling, create a simplified risk matrix that prioritizes remediation based on asset criticality and known exploitation techniques (e.g., CISA KEV list).
- **Leverage Free/Low-Cost Tools for Attack Path Mapping:** Use open-source tools or vendor evaluation periods to begin rudimentary attack path mapping between critical assets.
### For Medium Organizations
- **Pilot Attack Path Analysis:** Select core environments or critical business applications to pilot dedicated attack path analysis, proving the effectiveness of proactive prioritization before wide-scale rollout.
- **Integrate CIEM and CNAPP:** Begin integrating Cloud Security Posture Management (CSPM) and Cloud Infrastructure Entitlement Management (CIEM) to manage exposure risks inherent in cloud environments.
- **Establish Remediation SLAs based on Risk:** Define Service Level Agreements (SLAs) for patch and configuration fixes that explicitly factor in the exploitability and business impact identified through exposure analysis, moving beyond fixed timelines.
### For Large Enterprises
- **Implement Comprehensive Exposure Management Platforms:** Deploy integrated platforms that provide unified metrics across Vulnerability Management, Cloud Exposure, OT/IoT Exposure, and Identity Exposure.
- **Mandate Pre-emptive Control Deployment:** Require engineering and operations teams to implement segmentation and access controls as standard procedure *before* new assets are deployed or major changes are made, using findings from threat modeling simulations.
- **Align Reporting Directly to Business KPIs:** Develop exposure metrics and reporting dashboards (e.g., Exposure Scoring, Risk Reduction Percentage) that directly translate cyber posture improvements into business context for executive decision-making.
## Configuration Examples
*As the source material is high-level and strategic, specific, detailed configuration commands were not provided. However, the underlying principles suggest the configuration focus should be on:*
1. **Segmentation:** Configuring VPCs, firewall rules, or network access control lists (ACLs) to strictly limit lateral movement between network zones, especially between development, production, and critical data environments.
2. **Least Privilege:** Auditing and tightening identity permissions (IAM roles, Security Groups, local accounts) to ensure assets only have the permissions absolutely necessary for their function (Identity Exposure Management).
3. **Security-as-Code Integration:** Embedding security checks (vulnerability scanning, configuration drift monitoring) directly into CI/CD pipelines to prevent known insecure code or configurations from reaching production.
## Compliance Alignment
- **NIST Cybersecurity Framework (CSF):** Aligns strongly with the **Identify** function (understanding the attack surface) and the **Protect** function (implementing proactive controls like segmentation). The focus on risk-based remediation addresses the governance components of these functions.
- **ISO/IEC 27002:** Supports controls related to vulnerability management and access control by emphasizing continuous monitoring and risk reduction to maintain the declared security posture.
- **CIS Critical Security Controls (CSCs):** Directly supports CSC 1 (Inventory of Assets) and CSC 7 (Vulnerability Management) by driving smarter prioritization of remediation efforts.
## Common Pitfalls to Avoid
1. **The "Fix Count" Trap:** Continuing to celebrate high numbers of closed vulnerability tickets without assessing if those fixes actually reduced the probability or impact of a real-world attack (i.e., failing to shift to risk-based reporting).
2. **Isolation of Cloud Security:** Treating Cloud Exposure (CNAPP/CIEM) and traditional Vulnerability Management as separate silos, which prevents accurate attack path analysis across hybrid environments.
3. **Reacting to every vendor advisory:** Allowing the noise of low-risk advisories to distract teams from proactively addressing exploitable pathways on critical assets.
4. **Treating Automation as purely efficiency, not enabling risk focus:** Implementing automation solely to process more tickets faster, rather than implementing it to free up highly skilled analysts to focus on threat modeling and control design.
## Resources
- **Attack Path Analysis Tools:** Tools capable of mapping sequences of vulnerabilities and misconfigurations.
- **Automated Threat Modeling Frameworks:** Solutions that simulate adversary movements across the configured environment.
- **Cloud Security Posture Management (CSPM) / Cloud Infrastructure Entitlement Management (CIEM):** Essential technologies for managing identity and configuration risk in cloud resources.
- **Cyber Risk Quantification (CRQ) Methodologies:** Frameworks used internally to translate technical findings into financial or business loss probabilities, supporting the risk-based reporting shift.