{"id":4170,"date":"2026-06-15T10:05:58","date_gmt":"2026-06-15T14:05:58","guid":{"rendered":"https:\/\/www.tracenetsolutions.com\/?p=4170"},"modified":"2026-07-06T14:49:04","modified_gmt":"2026-07-06T18:49:04","slug":"ot-security-how-to-isolate-iot-devices-without-compromising-the-corporate-network","status":"publish","type":"post","link":"https:\/\/www.tracenetsolutions.com\/pt\/2026\/06\/15\/ot-security-how-to-isolate-iot-devices-without-compromising-the-corporate-network\/","title":{"rendered":"OT Security: How to Isolate IoT Devices Without Compromising the Corporate Network"},"content":{"rendered":"

Digital transformation and the rise of Industry 4.0 have brought unprecedented efficiency to the factory floor, distribution networks, and utilities.<\/span><\/p>\n

However, the convergence of Information Technology (IT) and Operational Technology (OT) has eliminated the old air gap: the physical isolation that historically protected industrial systems from the outside world.<\/span><\/p>\n

Today, the proliferation of IoT (Internet of Things) devices connected directly to the corporate network has critically expanded the attack surface. In this new hybrid landscape, OT Security has become an absolute priority for governance and business continuity.<\/span><\/p>\n

What is OT Security, and how does it differ from traditional IT?<\/b><\/h2>\n

OT Security (Operational Technology Security) is the set of practices, tools, and policies designed to protect the hardware and software that monitor and control physical devices, processes, and events in industrial environments.<\/span><\/p>\n

While traditional IT deals with data in motion (emails, ERPs, cloud servers), OT (Operational Technology) deals with the physical world (valves, hydraulic pumps, robotic arms, and conveyor belts).\u00a0<\/span><\/p>\n

This difference in scope completely changes the security priorities of each area:<\/b><\/h2>\n\n\n\n\n\n\n\n
Feature<\/b><\/td>\nTraditional IT\u00a0<\/b><\/td>\nTO \/ OT Security<\/b><\/td>\n<\/tr>\n
Highest Priority<\/b><\/td>\nConfidentiality (Protecting Data)<\/span><\/td>\nAvailability (The factory cannot shut down)<\/span><\/td>\n<\/tr>\n
Response Time<\/b><\/td>\nTolerant of delays (seconds\/minutes)<\/span><\/td>\nDeterministic real time (milliseconds)<\/span><\/td>\n<\/tr>\n
Life Cycle<\/b><\/td>\nFrequent updates (every 3 to 5 years)<\/span><\/td>\nLong-term legacy assets (15 to 30 years)<\/span><\/td>\n<\/tr>\n
Impact of Failures<\/b><\/td>\nFinancial loss and data breach<\/span><\/td>\nEnvironmental damage, destruction of machinery, and risks to life<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

The Risks of Industrial IoT Without an OT Security Strategy<\/b><\/h2>\n

As industrial IoT<\/a> sensors are installed to collect telemetry data, they establish two-way communication channels. The technical challenge is that most enterprise and industrial IoT devices were designed with a focus on low cost and ease of installation, neglecting built-in security.<\/span><\/p>\n

Many of these assets have factory-default passwords hardcoded into their firmware, do not support the installation of security agents (such as EDRs), and use legacy industrial protocols that were originally designed without any authentication or encryption mechanisms, such as Modbus, Profinet, and EtherNet\/IP.<\/span><\/p>\n

Without a dedicated OT Security layer, if a cybercriminal compromises a simple IP security camera or a temperature sensor on the factory floor, they can perform lateral movement, breach the corporate IT network, and steal data or directly sabotage the production programmable logic controllers (PLCs).<\/span><\/p>\n

Segmentation Strategies with OT Security: The Purdue Model<\/b><\/h2>\n

To isolate IoT devices without disrupting the data flow that feeds the company\u2019s BI and ERP systems, security engineers apply the Purdue Model (in accordance with the international standard IEC 62443).\u00a0<\/span><\/p>\n

This architecture divides the network into logical layers and prevents direct communication between the shop floor and the internet.<\/span><\/p>\n