Patch Management for OT Networks

Safeguard your industrial systems and maintain compliance while taking OT-aware patch workflows into consideration for low-risk, minimally disruptive operations

Why Patch Management for OT Networks is Important

Given the combination of outdated components, limited timeframes, and an important possibility of downtime, patching OT systems is difficult. While undetected assets are still at risk of serious attacks like ransomware, poorly scheduled patches can cause operational disruptions.

What we provide

At Netfosys, we put a focus directly to the OT patch management framework---that marries detailed element inventory, risk-based patching to an operationally safe deployment

Detailed Element Inventory

Provides detail of asset firmware, vendor name, version, and configuration data across PLCs, RTUs, HMIs, and field devices for total transparency

Risk-Based Vulnerability Patch Prioritization

Using vulnerability scores (CVSS) and asset criticality to assess and prioritize patch vulnerabilities into emergency, high, medium, and low risk

Vendor & Compatibility Exploration

Important consultations, and easily overlooked, discussions with OEMs to ensure compatibility and reduce impact prior to implementation of the patch

Controlled Testing & Deployment

Implementation should be assess in 'Test' zones or locations with a rollback plan before applying the patch in production zones or areas

Change Management & Audit Data

Document management approvals, deployment decisions, and rollback outcomes to inform and support compliance and operational review.

Continuous Monitoring & Feedback Loop

Monitor the issue of the patch, submit issues and recommendations for changes to the vulnerability assessment as the infrastructure changes and matures

Why Netfosys for OT Patch Management

We offer in our OT patching operates with precision, safety, and total compliance - specifically designed for legacy systems and environments that require zero downtime. Our tradecraft ensures you are minimally affected while maintaining the protection of your industrial assets from evolving threats

Key Advantages of Our Patch Management Services

1
OT First Patch Methodology
Custom-built to account for legacy systems, field devices, and safety-critical operations – all while ensuring reliability and uptime
2
Audit Ready Compliance Support
Supports ISA/IEC 62443, NERC-CIP, and ISO standards followed by log and reports that are traceable
3
Risk Aligned Patch Execution
Executes high-risk patches without impacting or interrupting scheduled operations.
4
OEM Verified Compatibility
Engage vendors directly to validate patch compatibility, ensure device functionality, and reduce operational risk before deployment
5
Repeatable Lifecycle Process
Standardized workflows including discovery, validation, rollout, rollback, and compliance reporting
6
Secure Alternatives When It Counts
Utilize segmentation, virtual patching, or filtering if patches cannot be safely supported

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