The line between information technology (IT) and traditional operational technology (OT) is blurring in modern manufacturing. The Internet of Things (IoT), which comprises smart devices with embedded sensors and connected machines, has now become an essential part of the manufacturing sector. These systems can make decisions in real time, automate procedures and collect information. Without adequate security, an attacker may gain access using a weakened IoT node and disrupt the manufacturing process, obtain sensitive production data, and even ruin equipment. Therefore, edge encryption and IoT security must be key elements of any manufacturer’s risk management playbook.
IoT devices are often designed for cost and operational efficiency, sometimes at the expense of robust security. Many connect through unencrypted channels, have insecure default passwords and use outdated firmware, making them ideal targets for attackers.
Threat actors leverage insecure or legacy IoT devices. These systems often use outdated firmware, insecure protocols, and hardcoded credentials, creating a perfect storm for exploitation. Many unsecured IoT devices contain unpatched security vulnerabilities, leading threat actors to target integrated cameras and DVR-like devices by exploiting these vulnerabilities and weak security protocols.
For modern Risk Operations (RiskOps) teams, visibility is one of the most critical pillars. You cannot secure what you don’t know about. It is still a challenge for many manufacturers to identify and map the full inventory of IoT and OT assets from smart actuators to programmable logic controllers that are interconnected across their IT and OT networks.
Asset Visibility: The Foundation of Risk Operations
Asset visibility is the foundational step in reducing cyber risk within a Risk Operations Center (ROC) framework. Unlike a Security Operations Center (SOC), which is reactive, the ROC focuses on continuous and proactive exposure management. It works as a centralised, proactive hub that consolidates cybersecurity, IT, and business risk data to identify, prioritise, and mitigate threats before they become incidents. After detecting and classifying every networked device and IoT endpoint on the shop floor, security teams can monitor linked devices and their communication, keeping an eye out for unauthorised access attempts or suspicious activity. Solving the asset visibility challenge also then allows the manufacturer to organise devices according to their respective functions and risk profiles.
Blind spots can be eliminated with the help of tools such as the ROC, which give integrated visibility across IT and OT systems. These solutions provide continuous, automated discovery and categorisation, including devices that connect unexpectedly or interact intermittently. This real-time inventory operates as the basis for edge security and vulnerability management strategies.
Vulnerability Management in an IT-OT Converged Environment
The air-gap method to security has effectively disappeared from modern manufacturing. Nowadays, enterprise solutions for analytics, supply chain integration and cloud services interact with IoT sensors and OT controllers. Exposure is increased by this convergence, where IoT firmware vulnerabilities could serve as gateways to more sophisticated OT systems. An attacker who compromises one IoT node can laterally access critical manufacturing systems within weakly segregated networks.
A robust vulnerability and risk management program must account for this increased complexity. It identifies risks that may compromise manufacturing operations, continually inspects devices and evaluates risks according to their importance. In manufacturing, where downtime for updates could result in reduced productivity and revenue loss, this risk-based approach is essential.
Cloud-native environments are also being targeted through exposed APIs and misconfigured services, with attackers quick to weaponize known vulnerabilities. Threat actors often abuse cloud resources, using cheap, temporary, or compromised computer instances to conduct reconnaissance and exploit attempts while masking their real origin. Large portions of this scanning activity appear to be tied to active vulnerability exploitation, such as attempts targeting PHP, ThinkPHP, DVR devices, Laravel, Spring Cloud Gateway servers, SSH brute-force attacks, misconfigurations, and secrets exposure.
Protecting Production Data with Edge Encryption
Edge encryption secures the ‘what happens next,’ whereas visibility and vulnerability management address the ‘who and what’ of the attack surface. Before it ever reaches central analytics systems, data collected by IoT devices, such as sensor readings, machine statuses and control signals, moves through local edge nodes. Encrypting data at the edge ensures:
- Without the data encryption keys, an attacker cannot access, modify or replay traffic that may have been intercepted on the local network layer.
- Sensitive production data is kept safe, even though it may involve competitor data or proprietary processes.
- Machine-generated signals, such as those used for modifying settings, are authenticated and protected against unauthorised manipulation.
How OEMs Can Reduce Risk in Modern Manufacturing
In manufacturing environments, security solutions that automate asset visibility, evaluation of vulnerabilities and risk prioritization have become increasingly necessary, a point that CERT-In has reiterated through various guidelines.
Today’s threat actors don’t need to be highly sophisticated to be effective. With widely available exploit kits, botnet frameworks, and scanning tools, even entry-level attackers can cause significant damage. Therefore, having unified visibility into all assets across IT and OT environments, especially manufacturing-line-associated IoT endpoints, is important.
OEMs should consistently assess vulnerabilities, prioritise critical risks using real-time threat intelligence, and validate exploits used by attackers. Organisations should maintain visibility into internet-facing assets, detect and remediate misconfigurations in real time, eliminate known vulnerabilities before attackers weaponise them, and protect cloud and on-premises infrastructure with continuous assessment so that the most significant problems can be mitigated without disrupting production or real-time operations.
Conclusion: Security  as an Enabler, Not a Barrier, to Modern Manufacturing
In the modern world of manufacturing, connectivity brings advantages as well as risks. Vulnerable shop-floor IoT devices may enable attackers to obtain sensitive data or disrupt company activities. Manufacturers can stay ahead of evolving threats by adopting a risk-based approach centred on asset visibility, edge encryption and continuous vulnerability management.
