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REXA

Real Exposure & eXecutable Actions
Objective measurement of cyber exposure

REXA (Real Exposure & eXecutable Actions) is an integrated cyber risk assessment service based on real technical evidence. The objective is to measure what is actually exposed, reachable, and exploitable by an attacker and to translate the resulting risk into a prioritized and actionable remediation plan.

This is not a documentary assessment or a theoretical scoring. REXA measures real exposure and concrete risk, validated through controlled attack simulations and modeling of operational and business impact.

Operational Architecture - REXA's 4 integrated capabilitiesExternal & Internal Attack Surface MappingReal-World Attack Validation (Adversary Emulation)Exposure-to-Impact Risk ModelingExecutable Remediation RoadmapThreat Intelligence & Dark Web MonitoringOperational Architecture - REXA's 4 integrated capabilitiesExternal & Internal Attack Surface MappingReal-World Attack Validation (Adversary Emulation)Exposure-to-Impact Risk ModelingExecutable Remediation RoadmapThreat Intelligence & Dark Web MonitoringOperational Architecture - REXA's 4 integrated capabilitiesExternal & Internal Attack Surface MappingReal-World Attack Validation (Adversary Emulation)Exposure-to-Impact Risk ModelingExecutable Remediation RoadmapThreat Intelligence & Dark Web MonitoringOperational Architecture - REXA's 4 integrated capabilitiesExternal & Internal Attack Surface MappingReal-World Attack Validation (Adversary Emulation)Exposure-to-Impact Risk ModelingExecutable Remediation RoadmapThreat Intelligence & Dark Web Monitoring
Operational Architecture - REXA's 4 integrated capabilitiesExternal & Internal Attack Surface MappingReal-World Attack Validation (Adversary Emulation)Exposure-to-Impact Risk ModelingExecutable Remediation RoadmapThreat Intelligence & Dark Web MonitoringOperational Architecture - REXA's 4 integrated capabilitiesExternal & Internal Attack Surface MappingReal-World Attack Validation (Adversary Emulation)Exposure-to-Impact Risk ModelingExecutable Remediation RoadmapThreat Intelligence & Dark Web MonitoringOperational Architecture - REXA's 4 integrated capabilitiesExternal & Internal Attack Surface MappingReal-World Attack Validation (Adversary Emulation)Exposure-to-Impact Risk ModelingExecutable Remediation RoadmapThreat Intelligence & Dark Web MonitoringOperational Architecture - REXA's 4 integrated capabilitiesExternal & Internal Attack Surface MappingReal-World Attack Validation (Adversary Emulation)Exposure-to-Impact Risk ModelingExecutable Remediation RoadmapThreat Intelligence & Dark Web Monitoring

Market needs

Most organizations are aware of their regulatory compliance level; few possess an objective technical measurement of their actual exposure. Undetected vulnerabilities, ungoverned assets, uncontrolled trust boundaries, and inconsistent configurations constitute attack surfaces exploitable by hostile actors using increasingly sophisticated methodologies.

REXA was created to bridge this structural gap: transforming cyber risk from a theoretical hypothesis into demonstrable and measurable technical evidence.

Operational Architecture
The 4 Integrated Capabilities of REXA

REXA integrates four operational capabilities into a single coherent methodological workflow:

External & Internal Attack Surface Mapping

Real-World Attack Validation (Adversary Emulation)

Exposure-to-Impact Risk Modeling

Executable Remediation Roadmap

These can be complemented by optional operational Threat Intelligence and Dark & Deep Web Monitoring services, which can be integrated into advanced service models.

External & Internal Attack Surface Mapping

The objective is to build a verified map of the actual attack surface. The activity includes:

  • External Attack Surface Management (public IPs, domains, cloud, shadow IT, exposed services).
  • Internal Attack Surface (IT/OT assets, services, protocols, IT-OT bridges).
  • Identification of unknown assets and ungoverned exposures.
  • Classification by domain: IT, OT, and IT/OT convergence.

Output:

  • Actual exposure map.
  • Evidence of critical assets that are actually reachable.
  • Gap between official inventory and actual state.
  • Technical risk baseline.

Exposure-to-Impact Risk Modeling

The objective is to link vulnerabilities, attack paths, and operational/financial impact. The activity includes:

  • Correlation between technical exposure and impact on production, downtime, safety, data, and compliance.
  • Risk scoring based on actual exposure, not exclusively on CVSS.
  • Distinction between IT, OT, and systemic risk.
  • Identification of credible top-risk scenarios.

Output:

  • Risk–exposure–impact map.
  • Evidence for CISOs, CIOs, and COOs.
  • Justifiable prioritization of investments.
  • Structured decision support.

Executable Remediation Roadmap

The objective is to translate the analysis into an actionable remediation plan, compatible with production, uptime, and safety constraints.

The roadmap:

  • Distinguishes between quick wins, structural interventions, and compensatory controls.
  • Aligns remediations with OT constraints and change windows.
  • Provides KPIs for periodic re-execution.
  • Supports the continuous improvement of the security posture.

Output:

  • Technical and managerial plan by domain (IT, OT, convergence).
  • Exposure reduction metrics.
  • Alignment between real risk and operational priorities.

Threat Intelligence & Dark Web Monitoring

In advanced models (REXA Continuous), the service integrates:
  • Continuous analysis of sector-relevant threats.
  • Monitoring of TTPs, active campaigns, and new techniques.
  • Correlation between emerging threats and the client's actual exposure.
  • Monitoring of forums, marketplaces, and closed channels (Dark & Deep Web).

Output:

  • Verified alerts.
  • Dynamic updating of top risk scenarios.
  • Reduction of time-to-awareness.
  • Direct input to the remediation roadmap.
  • Alignment between real risk and operational priorities.
Capability REXA
Core		 REXA
Advanced		 REXA
Continuous
Attack Surface Mapping (External + Internal) ✓ ✓ ✓ (periodic)
Asset Discovery & Exposure Baseline ✓ ✓ ✓ (continuous)
Adversary Emulation — ✓ ✓ (targeted)
Risk Modeling (Exposure → Impact) — ✓ ✓ (dynamic)
Remediation Roadmap Basic Prioritized Dynamic
Threat Intelligence — — ✓
Dark & Deep Web Monitoring — — ✓