First Watch® 4.3.6 Now Available

First Watch® Version 4.3.6 — now available worldwide

At First Watch®, innovation is driven by one mission — to deliver uncompromising Cyber Security for critical infrastructure in O/T environments.

We are proud to announce the release of First Watch® Version 4.3.6, now available to customers worldwide.

What This Release Means for You

Cyber threats targeting industrial environments continue to evolve in complexity and scale. Version 4.3.6 strengthens First Watch®'s position as a leader in Active Protection, delivering enhanced capabilities that help organisations stay ahead of these threats.

This release focuses on three key areas:

Stronger Protection

First Watch® continues to enhance its rule-based Active Protection engine, ensuring that malicious activity is blocked in real time before it can impact operations.

Greater Visibility

Improved monitoring and analysis capabilities provide deeper insights into SCADA systems, PLC communications, and network behaviour, enabling better operational awareness without overwhelming teams.

Improved Resilience

With enhancements designed for industrial environments, Version 4.3.6 ensures systems remain secure and stable — even in remote or low-connectivity conditions.

Built for O/T Environments

Unlike traditional IT security tools, First Watch® is purpose-built for Operational Technology (O/T).

Our platform delivers:

Active Protection instead of passive monitoring
Deterministic, rule-based security — eliminating false positives
Kernel-level defence for deep system protection
Continuous operation without disruption to industrial processes

This approach ensures that critical systems — from energy and utilities to manufacturing and infrastructure — remain protected at all times.

Available Globally

With Version 4.3.6, First Watch® continues to support customers across all regions worldwide, delivering consistent, high-performance protection wherever critical infrastructure operates.

Why It Matters Now

The shift toward digitisation, remote operations, and interconnected infrastructure has expanded the attack surface for industrial environments.

Organisations can no longer rely on detection alone. They need Active Protection that prevents threats before they cause damage.

Version 4.3.6 represents another step forward in helping our customers:

Reduce operational risk
Maintain system integrity
Ensure uninterrupted service delivery

Join the First Watch® Community

We are proud of the progress this release represents — and even more excited about what comes next.

If you are looking to strengthen your cyber resilience in O/T environments, now is the time to act.

Discover how First Watch® can protect your operations — request a demo or speak with our team today.

About First Watch®

First Watch® is a next-generation OT Cyber Security platform designed specifically for critical infrastructure. Our patented technology delivers Active Protection for SCADA and industrial systems, ensuring threats are stopped before they impact operations.