What is an OT system in manufacturing, and why must it be secured?

OT systems (operational technology) control physical manufacturing processes on the shop floor, including machinery, PLCs, and SCADA systems. Securing these systems reduces downtime, limits disruption, and protects critical production processes from cyber threats.

Does OT/IT integration increase the attack surface in manufacturing?

Without proper controls, integration can increase vulnerability and expand the attack surface. However, secure architectures using hardware-enforced data diodes and our TrustedFilter® allow manufacturing companies to integrate systems while minimising exposure to threats.

How does OT/IT convergence improve productivity and operational efficiency in manufacturing environments?

By integrating operational technology with information technology, manufacturers can streamline data flows, improve decision-making, and optimise production processes while maintaining secure, continuous operations.

Can real-time data and analytics be used safely in manufacturing operations?

Yes, real-time data and analytics can be leveraged safely when transferred through secure architectures. This enables data-driven decision-making without compromising the integrity of OT systems or increasing risk.

How can manufacturers securely integrate IoT and IIoT devices into existing OT systems?

Secure integration of Internet of Things (IoT) and Industrial Internet of Things (IIoT) devices requires protecting the expanded attack surface. Solutions like unidirectional gateways enable the safe flow of information from sensors and machinery in OT environments without exposing critical systems to cyber risk.

IOT SECURITY IN MANUFACTURING

Connect manufacturing data without putting production at risk.

4Secure helps UK manufacturers securely connect OT, IT, cloud, SOC and third parties while maintaining the isolation and control needed to protect uptime, safety, quality and delivery.

Discuss your data flow Explore Manufacturing use cases

Trusted across critical infrastructure and OT environments

Supporting organisations operating distributed, high-dependency infrastructure where operational resilience and secure data transfer are essential.

THE MANUFACTURING SECURITY CHALLENGE

Make production data available without making production more accessible

Cloud analytics, centralised monitoring, remote engineering and connected supply chains all rely on data from the plant. The security question is not whether that data should move. It is what should cross the production boundary, in which direction and under what policy.

Manufacturers need to enable

Enterprise and cloud access to useful OT data

SOC visibility across operational environments

OEM, supplier and remote engineering support

Consistent data exchange across multiple sites

Manufacturers need to protect

Production uptime, safety, quality and delivery

Legacy assets that cannot follow IT patch cycles

Recipes, set points, designs and quality records

Critical zones from ransomware and lateral movement

WHY MANUFACTURERS ARE ACTING NOW

Connectivity is expanding. The trust boundary should not.

01

Cloud and Industry 4.0

Production telemetry is needed by analytics, AI, digital twins and enterprise platforms.

02

Centralised operations

Monitoring, engineering and security teams need consistent visibility across multiple plants.

03

OEM and supplier support

Third parties need useful diagnostics, but should not gain unrestricted access to the plant.

04

Legacy and regulated estates

Older assets and high-value production require stronger assurance without disruptive change.

MANUFACTURING IOT SECURITY USE CASES

Secure the data flows that support modern manufacturing.

4Secure starts with the required flow: what needs to move, who needs it, the protocols involved and whether any return path is acceptable. We then apply a proportionate level of assurance to the exchange.

OT data into IT and cloud

Release approved production data to MES, ERP, historians, maintenance platforms, digital twins, AI and cloud analytics without extending trust back into the plant.

Support digital manufacturing while maintaining separation between zones of trust.

OT visibility for SOC and SIEM

Send relevant events, logs and telemetry to monitoring teams while keeping operational systems isolated from unnecessary enterprise access.

Improve visibility without creating an unnecessary route into OT.

Controlled OEM and supplier exchange

Share diagnostics, files and equipment status without broad inbound access or unnecessary exposure of recipes, set points, production volumes and plant identifiers.

Give third parties the information they need, without exposing more of the plant.

Protection for legacy production systems

Place modern policy enforcement and protocol handling at the trust boundary so older PLC, DCS, SCADA, CNC and laboratory systems can remain isolated.

Exchange operationally required data without forcing wholesale replacement.

Secure site-to-site data transfer

Apply repeatable connectivity and control patterns across mixed-vendor plants, acquired estates and factory-to-factory data flows.

Standardise how data crosses trust boundaries across the estate.

Secure IoT and edge-to-cloud connectivity

Process and buffer data locally, then move only approved telemetry or outputs from distributed production sites into cloud environments.

Support smart manufacturing while controlling what leaves the production environment.

Production data transfer

Move production data from field systems into central reporting and analytics platforms securely.

Historian to analytics

Create secure data pipelines between historians and business intelligence environments.

Remote operations

Support operational visibility across offshore, remote and distributed assets.

Offshore connectivity

Enable controlled connectivity for offshore platforms and remote operational sites.

Safe reconnection

Reconnect segmented networks safely without introducing uncontrolled inbound exposure.

Regulatory resilience

Support resilience, compliance and assurance requirements across critical environments.

OT data into IT and cloud
OT visibility for SOC and SIEM
Controlled OEM and supplier exchange
Protection for legacy production systems
Secure site-to-site data transfer
Secure IoT and edge-to-cloud connectivity

Talk us through your requirement

Have a live or planned manufacturing data-flow requirement?

Talk us through the source, destination and operational constraints.

Get in touch

SECURE DATA MOVEMENT IS MORE THAN CONNECTIVITY

Control the data, the direction and the route between zones of trust

4Secure defines the exchange requirement first, then designs the architecture around the sensitivity of the data, the criticality of production and the assurance required.

What needs to move?

Define the telemetry, logs, files, alarms or structured data, including its source, destination and protocol.

What should reach the destination?

Identify what must be validated, inspected, removed, masked or transformed so the recipient gets useful data without unnecessary detail.

Is a return path acceptable?

Determine whether the exchange can be bidirectional, must be tightly governed or should be physically enforced as one way.

THE 4SECURE APPROACH

The right level of assurance for each data flow

One manufacturing environment can require several control patterns. We select around the flow and operational risk, rather than forcing every requirement into one product.

Policy controlled

Inspect and transform approved data

TrustedFilter

TrustedFilter® validates supported data and can remove, mask, generalise, redact or obfuscate information before release.

BEST CONSIDERED FOR
Reporting, analytics and controlled partner sharing

Edge to cloud

Process locally and release approved outputs

CloudExchange + AWS IoT Greengrass

CloudExchange and AWS IoT Greengrass support local processing, messaging, buffering and fleet management across distributed sites.

BEST CONSIDERED FOR
Best for industrial IoT, cloud analytics and intermittent connectivity.

Higher assurance

Enforce the direction of travel

VARA and diode-backed architectures

VARA and diode-backed architectures reduce inbound pathways and maintain high-assurance separation between production zones.

BEST CONSIDERED FOR
Critical flows where a return path is unacceptable

OPERATIONAL VALUE

Protect production while enabling the data it depends on

Protect availability

Reduce unnecessary routes into the systems supporting uptime, quality and delivery.

Enable modernisation

Make approved production data available to enterprise and cloud programmes.

Control third-party exchange

Share the required information without exposing more of the plant than necessary.

Standardise across sites
Apply repeatable exchange controls across vendors, plants and acquired estates.

WHY 4SECURE

Secure data exchange designed around your manufacturing environment

4Secure brings cross-domain expertise to industrial environments, combining deep control of the data with an understanding of OT, IT and the operational consequences of change.

OT and IT expertise

Reduce unnecessary routes into the systems supporting uptime, quality and delivery.

Technology-agnostic design

Software, hardware or combined patterns are selected according to the data flow and level of assurance required.

Control beyond the connection

Supported flows can be inspected and transformed so only permitted information reaches the destination.

UK sovereign support

A UK-based, consultative team supports discovery and solution design around the customer environment.

Get In Touch

Tell us what needs to move, where it needs to go and what cannot be put at risk. A UK-based specialist will help you identify a proportionate route forward, whether the requirement is at one plant or across a wider manufacturing estate.