We are thrilled to announce the release of MetaDefender OT Security v3.5, a major milestone designed to redefine how organizations protect and manage their OT and CPS environments. This release brings together AI-driven intelligence, expanded visibility into personal and unmanaged devices, and detection of unexpected commands to ICS devices.
With version 3.5, OPSWAT continues its commitment to empowering customers with deep visibility, robust threat detection, and simplified management across complex industrial networks—bridging the gap between IT and OT security operations like never before.
Key Highlights of MetaDefender OT Security v3.5
AI Assistant
Building on OPSWAT’s AI innovation, the new AI assistant embedded in the MetaDefender OT Security dashboard provides real-time, context-aware guidance to operators. Whether explaining an alert, suggesting next steps for incident response, or helping users navigate the dashboard, the assistant reduces complexity and accelerates operational decisions.
It’s like having a built-in OT cybersecurity assistant—available 24/7—to help teams work smarter and respond faster.
BYOD Support and IT Integration for Greater Visibility
As personal and contractor devices increasingly connect to industrial environments, visibility into these endpoints has become critical. With BYOD support, MetaDefender OT Security v3.5 integrates seamlessly with existing IT infrastructure to detect, identify, and monitor unmanaged or personal devices entering corporate or plant networks.
Security teams can now:
- Gain complete visibility into personal, unmanaged, or transient devices
- Assess and enforce policies consistently across IT and OT assets
- Reduce exposure to potential threats introduced through BYOD access
This integration bridges the IT-OT divide, ensuring every connected device—personal or corporate—is seen, assessed, and secured.
Detection of Critical Control Commands & Common DDoS Attacks
Building on OPSWAT’s deep expertise in industrial threat detection, v3.5 introduces the ability to detect abnormal and unexpected commands sent to Industrial Control System (ICS) devices. This advanced capability monitors control traffic to identify deviations from known baselines or typical operational behavior — allowing early detection of:
- Malicious or unauthorized command sequences
- Manipulation attempts on controllers or actuators
- Misconfigurations that could disrupt physical processes
By pinpointing anomalies at the command level, organizations can prevent process disruptions, reduce false positives, and strengthen defense against cyber-physical attacks.
Additional Enhancements
- Integration with OPSWAT NAC Cloud for unified visibility and access control across IT and OT networks
- Detection of malicious command to PLC
- Alert workflow trigger playbook
- Quarantine device and/or block the response to prevent attack
- Simplified Setup via Web Console to accelerate deployment
- Enhanced UI/UX for improved navigation and situational awareness
- Offline Upgrade Support for air-gapped deployments
- PCAP File Ingestion for deeper forensic analysis
- Japanese Language Support to enhance accessibility in APAC
Why This Matters
MetaDefender OT Security v3.5 represents a major step forward in delivering an intelligent, integrated, and user-friendly OT security experience. Organizations can now:
- Detect operational anomalies and abnormal ICS commands before they cause disruption
- Extend visibility to personal and unmanaged devices through BYOD support
- Leverage AI to simplify complex workflows and accelerate decisions
This release reaffirms OPSWAT’s focus on operational resilience, visibility, and usability — helping customers protect what matters most: their critical assets and processes.
Get Started with MetaDefender OT Security v3.5
MetaDefender OT Security v3.5 is available now. Customers can contact their OPSWAT representative or log in to the OPSWAT Customer Portal for upgrade instructions.
Release Details:
- Product: MetaDefender OT Security
- Release Date: November 3rd, 2025
- Release Note
