Policy Development & Governance

Effective cybersecurity in OT environments starts with enforceable policies. These provide structure, clarity, and accountability across your operational and security teams. Arista Cyber develops tailored, standards-aligned OT cybersecurity policies that define how your organization manages security, access, change, and incidents with governance frameworks that align with IEC 62443, NIST SP 800-82, and ISO/IEC 27001.

Our Approach

We begin with a deep-dive discovery phase, assessing your existing governance structure, operational workflows, and regulatory landscape. Using best practices from industrial control system (ICS) standards, we develop a suite of policy documents each customized to your environment. These are structured for operational practicality, while satisfying audit and certification requirements. Stakeholder training and policy deployment support ensure smooth adoption.

Benefits

1. Formalized roles, responsibilities, and accountability structures
2. Standardized security practices across teams and processes
3. Clear incident response escalation and containment pathways
4. Foundation for compliance with ISO, NIST, IEC, and local regulations
5. Alignment between IT, OT, and executive security governance

Deliverables

1. Full OT cybersecurity policy suite (access control, change management, incident response, etc.)
2. Role-based governance and escalation matrix
3. Mapping of policies to applicable standards and regulations
4. Policy deployment roadmap and implementation support
5. Custom training materials for policy awareness

CONTROLLED, CENTRALIZED, AND COMPLIANT REMOTE ACCESS FOR RESILIENT OPERATIONS

OT Audit & Complilance Review

OT environments must prove not only that controls exist — but that they work. Arista Cyber’s audit and compliance services rigorously examine your OT environment’s technical and procedural controls, ensuring they meet internal policy, regulatory obligations, and industry best practices.

Our Approach

Using a standards-aligned methodology (NIST CSF, ISO 27001, IEC 62443), we conduct a full- scope OT security audit, including both documentation review and technical validation. We evaluate your environment for policy alignment, control effectiveness, operational consistency, and potential compliance risks. Our team documents every finding with detailed severity ratings and prioritization guidance.

Benefits

1. Independent validation of OT cybersecurity posture
2. Audit-ready reports for stakeholders and regulators
3. Visibility into procedural breakdowns and technical misconfigurations
4. Gap analysis against required standards and frameworks
5. Foundation for certification efforts and vendor assurance programs

Deliverables

1. Audit report with scope, methodology, findings, and risk levels
2. Compliance gap analysis against internal policy and external standards
3. Technical control effectiveness validation (network segmentation, patching, etc.)
4. Operational review of procedures and staff alignment
5. Executive summary with board-level risk positioning
6. Remediation roadmap with prioritized actions

OT Penetration Testing

OT Penetration Testing reveals exploitable vulnerabilities in your control networks before real attackers do. Unlike IT environments, OT systems require testing methodologies that ensure system safety, availability, and business continuity. Arista Cyber uses OT-aware penetration testing techniques tailored for ICS/SCADA and other critical assets.

Our Approach

We first perform a thorough threat modeling exercise based on your architecture and industry-specific risks. Testing focuses on passive and active assessments that preserve system stability while delivering real-world insight. We analyze network segmentation, protocol behavior, user access points, and device-level vulnerabilities. Findings are translated into actionable hardening and mitigation strategies.

Benefits

1. Real-world insights into exploitable risks across your OT environment
2. Validation of segmentation, access controls, and device protections
3. Identification of unsafe configurations, default credentials, and exposed services
4. Safer, non-disruptive testing tailored to operational environments
5. Stronger assurance to regulators, vendors, and internal stakeholders

Deliverables

1. Tailored threat model and test plan specific to OT/ICS systems
2. Reachability and exposure mapping of OT assets
3. Vulnerability exploitation report (with PoC where allowed)
4. Risk classification with CVSS and operational impact scoring
5. Detailed remediation guidance (patching, segmentation, configuration)
6. Optional retesting and mitigation validation