Identify security gaps across PLCs, SCADA, HMIs, and industrial networks that could impact operational continuity.
Simulate real-world attacks to assess potential compromise of control systems or disruption of critical processes.
Deliver actionable, prioritized recommendations to strengthen industrial cybersecurity defenses.
Support compliance with leading standards such as IEC 62443, NIST SP 800-82, ISO/IEC 27019, and sector-specific regulations.
Our OT VAPT services are tailored to your control system architecture and operational risk profile:
ICS/SCADA Testing – Evaluation of SCADA, DCS, and PLC environments for insecure configurations and logic flaws.
Network & Protocol Testing – Assessment of industrial networks and protocols (Modbus, DNP3, OPC, PROFINET, etc.) for communication and segmentation weaknesses.
Endpoint & Device Security – Testing of HMIs, engineering workstations, and field devices for firmware and authentication vulnerabilities.
Perimeter & Remote Access Testing – Review of firewalls, gateways, and VPNs bridging IT and OT networks.
End-to-End Ecosystem Testing – Comprehensive assessment across devices, networks, and control layers to identify systemic and chained risks.
Here’s our structured, end-to-end methodology to assess and strengthen the security of your SCADA and Industrial Control Systems (ICS), ensuring operational resilience and regulatory compliance:
Valency Networks has established a proven track record of delivering exceptional network security services to clients across various industries. Our team of seasoned cybersecurity professionals brings extensive experience and expertise to every engagement, ensuring the highest quality of service and results that exceed client expectations.
To deliver comprehensive and accurate Operational Technology (OT) Vulnerability Assessment and Penetration Testing (OT VAPT), we employ a strategic blend of industry-standard tools, advanced manual techniques, and globally recognized methodologies. This hybrid approach ensures deep visibility into both common security flaws and complex control-system-specific weaknesses that automated scanners alone cannot uncover.
We begin with a curated set of automated solutions to scan OT networks, industrial protocols, control devices, and supporting infrastructure. These tools accelerate initial discovery, reveal known vulnerabilities, and establish a foundation for targeted manual analysis.
Automated tools provide speed, but manual testing delivers depth. Our experts replicate realistic attacker behaviors to uncover logic flaws, chained vulnerabilities, and human-error-driven weaknesses across the OT ecosystem.
Our assessments adhere to internationally recognized frameworks to ensure accuracy, repeatability, and compliance.
Our OT VAPT methodology combines automation, expert manual analysis, and industrial domain knowledge to ensure both breadth and depth of coverage.
We continuously update our testing techniques in line with emerging OT and ICS threats, ransomware trends, and regulatory evolution, ensuring resilient protection for your critical infrastructure.
This is why leading energy, manufacturing, and utility organizations trust us to secure their operational environments, safeguard uptime, and maintain compliance.
Operational Technology (OT) and SCADA systems face a wide range of vulnerabilities that can threaten the safety, reliability, and continuity of critical industrial operations. These weaknesses often stem from legacy systems, insecure configurations, and human or supply chain factors.
As industrial networks evolve to integrate IoT, cloud analytics, and remote operations, securing the OT stack becomes increasingly complex. Many organizations unintentionally expose control systems, process data, or safety logic due to weak authentication, insecure protocols, or insufficient patch management. Detecting and addressing these issues early helps prevent operational disruptions, system manipulation, or safety incidents.
OT security vulnerabilities often stem from basic misconfigurations and overlooked weaknesses rather than advanced attacks. Examples include unpatched PLCs, default credentials, open network ports, or unsecured remote connections. Attackers exploit these flaws to disrupt operations, steal process data, or cause physical damage. Without proactive testing and remediation, such vulnerabilities can result in downtime, safety risks, regulatory penalties, and financial loss.
Many industrial control systems still run on outdated firmware or unsupported operating systems. These systems lack modern security features, making them easy targets for exploitation and operational disruption.
Default passwords, shared accounts, and missing multi-factor authentication allow attackers—or even insiders—to gain unauthorized access to control systems, modify logic, or manipulate critical processes.
Common OT protocols (Modbus, DNP3, OPC, PROFINET, etc.) often lack encryption and authentication. Attackers can intercept or alter control commands, leading to data manipulation or unsafe equipment behavior.
Flat or poorly segmented OT networks enable lateral movement once attackers gain access. Insecure remote connections (e.g., VPN misconfigurations) further expose critical assets to external threats.
Many OT environments avoid regular patching due to uptime concerns. As a result, known vulnerabilities remain unaddressed, leaving systems exposed to exploits and ransomware attacks.
OT security incidents can cause far-reaching consequences—from production shutdowns and equipment damage to environmental hazards and safety violations. A proactive OT VAPT program identifies weaknesses before attackers do, helping organizations strengthen defenses, ensure compliance (IEC 62443, NIST SP 800-82), and safeguard both operations and personnel.
These controls combine technical, procedural, and physical safeguards designed to prevent, detect, and respond to security incidents within industrial control environments. Below are the key security controls essential for strengthening OT security and maintaining operational resilience.
Dividing OT networks into isolated zones limits the impact of security breaches and prevents lateral movement by attackers.
Implementation:
Restricting access ensures only authorized personnel can interact with OT systems and devices.
Implementation:
Securing field devices, HMIs, and engineering workstations reduces exposure to malware and unauthorized modifications.
Implementation:
Timely patching prevents exploitation of known vulnerabilities in software, firmware, or operating systems.
Implementation:
Continuous visibility across the OT network helps detect and contain potential threats quickly.
Implementation:
Protecting data in transit and at rest mitigates risks of interception and tampering.
Implementation:
Human error remains a major source of OT security incidents; continuous education helps mitigate this risk.
Implementation:
Third-party solutions can introduce vulnerabilities; ensure vendors follow strong security standards.
Implementation:
Ensures continuity and rapid recovery in case of system compromise or failure.
Implementation:
Cyber threats evolve; continuous assessment keeps defenses aligned with new risks.
Implementation:
Protecting physical assets prevents direct tampering with industrial systems.
Implementation:
Integrating security throughout the OT software development lifecycle ensures safer systems.
Implementation:
Implementing a layered defense strategy—combining technical, administrative, and physical controls—is critical to protecting OT environments. Aligning these controls with industry standards such as IEC 62443, NIST SP 800-82, and ISO/IEC 27019 ensures continuous improvement, regulatory compliance, and operational safety.
Conducting an OT VAPT (Vulnerability Assessment and Penetration Testing) is essential for identifying weaknesses across control systems, networks, and industrial assets—but lasting OT security requires continuous vigilance, proactive management, and a culture of cybersecurity awareness. Implementing the following best practices helps reduce operational risks, enhance resilience, and safeguard critical infrastructure from evolving cyber threats.
By integrating these best practices with regular OT VAPT assessments, organizations can establish a defense-in-depth security posture. Proactive patching, strong authentication, network segmentation, secure communications, and continuous monitoring are key to protecting critical infrastructure, ensuring operational continuity, and maintaining regulatory compliance in today’s interconnected industrial world.
Below is a concise, end-to-end view of how we safely perform SCADA/ICS penetration testing. The process balances realistic attack simulation with strict safety controls to avoid operational impact while revealing exploitable weaknesses.
Define assets, in-scope systems (PLCs, HMIs, RTUs, SCADA servers, engineering workstations, network segments), testing windows, acceptable impact, and emergency rollback procedures.
Inventory devices, map topology, collect firmware/software versions and reachable services using non-intrusive techniques.
Analyze network segmentation, trust boundaries, and industrial protocols (Modbus, DNP3, OPC, PROFINET, EtherNet/IP, IEC 104). Identify insecure protocol usage and authentication gaps.
Run targeted, low-impact scans for known CVEs, default creds, open services and misconfigurations.
Manually validate findings, remove false positives, and design safe exploitation steps (lab repro first). Prioritize tests by risk and potential operational impact.
Reproduce exploit scenarios in a testbed or digital twin that mirrors production logic and timing. Validate exploit behavior and rollback procedures.
Execute planned exploits under strict controls (scheduled windows, operator coordination) to demonstrate impact: command injection, control manipulation, authentication bypass, protocol spoofing, replay attacks.
Attempt to move between zones (field → control → engineering → IT) to assess segmentation and pivot risk. Test remote access paths, VPNs, jump hosts, and engineering tools.
Test potential persistence mechanisms (malicious firmware, scheduled tasks) and evaluate whether attacks can subvert safety interlocks or cause unsafe process states. Always avoid actions that could endanger people or environment.
Deliver a prioritized report with executive summary, technical findings, risk ratings, attack chains, and clear remediation steps (patches, segmentation, ACLs, configuration changes). Provide remediation support and retest after fixes.
At Valency Networks, we recognize that the value of an OT security assessment goes beyond identifying vulnerabilities—it lies in translating findings into actionable, operationally safe guidance. Our OT reports are designed to clearly communicate risks, compliance gaps, and remediation priorities to both technical teams and organizational leadership, enabling informed decisions and secure operations.
Our documentation framework ensures that every discovery—from PLC misconfigurations to network segmentation weaknesses—is captured in a way that supports both engineers on the floor and executives overseeing critical infrastructure.
1. Technical Report with Detailed FindingsA comprehensive breakdown of vulnerabilities across SCADA systems, PLCs, HMIs, RTUs, and OT network segments.
Includes:
2. Executive Summary for ManagementA high-level overview designed for leadership and decision-makers.
Includes:
3. Risk Severity Matrix (CVSS-Based)Vulnerabilities are rated using CVSS combined with OT-specific factors.
Factors Considered:
4. Proof-of-Concept (PoC) EvidenceSafe demonstrations of exploit scenarios and verification steps for key vulnerabilities.
Includes:
By combining detailed technical insights with executive-friendly reporting, Valency Networks ensures that your OT security assessment drives actionable improvements, strengthens resilience, and protects critical industrial operations.
Identifying vulnerabilities in OT systems is only the first step—true value comes from effectively mitigating risks while maintaining operational continuity. At Valency Networks, we provide end-to-end remediation support, helping your OT engineers, operations teams, and cybersecurity staff implement fixes securely, safely, and sustainably. Our approach strengthens industrial processes, reduces downtime risk, and builds long-term operational resilience.
We provide detailed, actionable instructions for every identified OT vulnerability, customized for your environment.
Includes:
Benefit: Your OT teams can remediate risks efficiently without interrupting critical operations.
We guide engineers in applying secure design and configuration principles across OT systems.
Includes:
Benefit: Reduces the likelihood of recurring vulnerabilities and ensures systems are protected by design.
Outdated software or firmware is a major source of OT security risk. We assist with:
Benefit: Ensures OT systems remain resilient against known vulnerabilities without disrupting industrial processes.
After remediation steps are implemented, we conduct targeted retesting to:
Benefit: Provides confidence that your OT environment is secure, reliable, and ready for production.
Selecting the right OT security partner is critical—not just to identify vulnerabilities, but to ensure your industrial operations remain safe, reliable, and resilient. At Valency Networks, we combine deep OT cybersecurity expertise with a practical, business-focused approach, providing assessments that deliver both technical insight and strategic value.
Here’s why leading organizations trust us to secure their OT environments:
Our team includes certified professionals (OSCP, CEH, CISSP, GICSP, and OT security specialists) with extensive experience in industrial control systems, SCADA, PLCs, HMIs, and network exploitation. Every test is conducted with advanced technical skill and ethical precision.
We’ve performed OT security assessments for energy, manufacturing, water treatment, transportation, and smart infrastructure. From critical SCADA systems to industrial IoT deployments, we adapt our methodology to your technology stack, operational environment, and regulatory requirements.
Every OT environment is unique. We tailor our testing approach to your systems—covering network architecture, PLCs, HMIs, RTUs, SCADA software, and vendor-specific devices. Our methodology scales from single-site assessments to enterprise-wide OT networks, ensuring precise, in-depth coverage.
Safety and confidentiality are paramount. All assessments are conducted under strict NDAs and with controlled testing protocols designed to avoid disruption to industrial processes while safeguarding sensitive data.
We go beyond finding vulnerabilities. Our experts assist with mitigation, secure configuration, patch management, and post-remediation validation, helping your OT teams strengthen systems and maintain long-term operational resilience.
With Valency Networks, you gain more than an assessment—you gain a trusted OT security partner dedicated to protecting your industrial operations, ensuring compliance, and building lasting cyber resilience.
Founder & CEO, Valency Networks
Prashant Phatak is an accomplished leader in the field of IT and Cyber Security. He is Founder and C-level executive of his own firm Valency Networks. Prashant specializes in Vulnerability assessment and penetration testing (VAPT) of Web, Networks, Mobile Apps, Cloud apps, IoT and OT networks. He is also a certified lead auditor for ISO27001 and ISO22301 compliance.As an proven problem solver, Prashant's expertise is in the field of end to end IT and Cyber security consultancy to various industry sectors.
