OT Security Blog
Technical articles, industry analysis, and practical guidance on securing operational technology environments and critical industrial infrastructure.
The CEA Cyber Security in Power Sector Regulations, 2026: Why They Matter and What Each Chapter Requires
Notified in the Gazette of India on 31 July 2026 and coming into force on 1 April 2027, the CEA (Cyber Security in Power Sector) Regulations, 2026 run to ten chapters and two schedules. This guide explains why the regulations carry the weight they do, then walks through each chapter in turn and sets out what it asks an entity or a vendor to do.
CRA vs NIS2: The Definitive Comparison of the EU's Cyber Laws
The Cyber Resilience Act and the NIS2 Directive are the two pillars of the EU's cybersecurity strategy, and they are constantly confused. One regulates products, the other regulates organisations. This deep comparison explains the difference, the obligations, the deadlines, and the consequences of ignoring either.
The EU Cyber Resilience Act (CRA): A Complete Guide to Compliance
The Cyber Resilience Act sets a common cybersecurity baseline for connected and software products sold in the EU. This guide explains, in clear terms, what it requires, who it applies to, how the EN 40000 standards turn the law into practice, how vulnerability handling works, and the deadlines that matter.
OT Security for Chemical Manufacturing: Protecting Process Safety from Cyber Threats
In chemical manufacturing, a cybersecurity incident can become a safety incident, which makes OT security inseparable from process safety. This guide explains the sector's threat landscape, the critical role of control and safety systems, and how to protect chemical processes where the consequences of loss of control are severe.
The EU Cyber Resilience Act (CRA): What It Means for OT and Industrial Devices
The EU Cyber Resilience Act introduces mandatory cybersecurity requirements for products with digital elements, including industrial devices, with obligations phasing in through 2027. This guide explains the CRA's scope, timeline, and core requirements, and what it means for the manufacturers and operators of OT equipment.
FrostyGoop and Fuxnet: Inside the New Wave of ICS-Targeting Malware
Two pieces of malware disclosed in 2024, FrostyGoop and Fuxnet, mark a new phase in threats to industrial control systems. Both disrupted real infrastructure by abusing the industrial protocols that OT depends on. This guide explains how each works, what they have in common, and what they mean for OT defense.
OT Product Security: A Buyer's Guide to Secure-by-Design Industrial Equipment
The security of an industrial environment is shaped long before a device is installed, at the moment it is purchased. This guide explains what secure-by-design means for OT, the standards that define a secure product, and the specific requirements buyers should demand from vendors to keep insecure equipment out of the plant.
HMI Security: How to Harden Operator Interfaces in Industrial Environments
The HMI is the operator's window into the industrial process and a frequent target for attackers, because control of the HMI can mean control of the operator's view of reality. This guide explains why HMIs are vulnerable, the consequences of their compromise, and a practical approach to hardening them.
Building a Business Case for OT Security: How to Win Executive Buy-In
OT security initiatives often stall not because leadership disagrees with the risk, but because the case is made in the wrong language. This guide explains how to translate OT cyber risk into the operational and financial terms that executives fund, and how to present a business case that earns sustained investment.
OT Firmware Security: Detecting Backdoors and Hidden Threats in Industrial Devices
Firmware is the low-level software that runs every controller, sensor, and inverter in an industrial environment, and it is one of the least examined parts of the OT attack surface. This guide explains the firmware threat landscape, why these threats are hard to detect, and how secure development standards and procurement discipline reduce the risk.
NERC CIP Compliance: A Practical Guide for Power Utilities
NERC CIP is the mandatory cybersecurity standard governing the North American bulk power system, and non-compliance carries real financial penalties. This guide explains how BES Cyber Systems are categorized, walks through the CIP standards from CIP-002 to CIP-014, and outlines a practical path to sustained compliance.
OT Security for Oil and Gas: Protecting Upstream, Midstream, and Downstream
Oil and gas runs on operational technology spread from remote wellheads to pipeline SCADA to refinery control and safety systems, and the security priorities change at every stage. This guide explains the sector's threat landscape and the specific challenges and controls for upstream, midstream, and downstream operations.
Volt Typhoon and Living-off-the-Land: Nation-State Threats to Critical Infrastructure
Volt Typhoon maintained access to US critical infrastructure networks for years without deploying malware, using the environment's own administrative tools to avoid detection. This guide explains the living-off-the-land technique, what CISA advisory AA24-038A documented, why traditional defenses miss it, and how OT teams can detect an adversary that leaves almost no trace.
The Purdue Model in 2026: Is It Still Relevant for OT Network Architecture?
The Purdue model has guided industrial network design for three decades, but cloud connectivity, edge computing, and remote operations have challenged its rigid layers. This guide explains what the model is, the security principles behind it, where modern architectures strain it, and how IEC 62443 zones and conduits carry its logic forward.
AI in OT Security: How Machine Learning Is Reshaping Industrial Defense
Machine learning now sits at the core of modern OT monitoring, and it is increasingly part of the attacker's toolkit as well. This guide explains how AI-based detection actually works in industrial environments, where it delivers value and where it does not, how adversaries are using the same technology, and the guardrails that keep it from causing harm.
OT Cybersecurity Compliance in Saudi Arabia: A Practical Guide to OTCC and NCA
Saudi Arabia's National Cybersecurity Authority has made operational technology security a formal requirement through the OTCC framework. This guide breaks down the four control domains, explains how applicability is determined, maps the controls to IEC 62443, and walks through building an OTCC compliance program in a real industrial environment.
Where Your OT Security Budget Actually Needs to Go: A Three-Tier Investment Framework
Most boardroom conversations about OT security spending start with the wrong question: 'How much should we spend?' The real question is 'What are we actually building?' Here is a practical investment framework that reframes the conversation around compliance, operational capability, and cyber risk reduction.
PLC Security: Protecting the Brain of Your Industrial Process
Programmable Logic Controllers are the most targeted devices in modern OT attacks. From Stuxnet to PIPEDREAM, adversaries have invested in PLC-specific capabilities that most industrial organizations are wholly unprepared to detect or stop.
Cyber Insurance for OT: What Underwriters Want to See
Cyber insurance for operational technology environments has become significantly harder to obtain and more expensive to renew. Understanding what underwriters assess, how OT-specific exposures affect premiums, and what security investments actually improve insurability is now a practical business requirement.
OT Threat Intelligence: What CISOs Need to Know About ICS Threat Actors
Generic cybersecurity threat intelligence has limited value in OT environments. Understanding the specific threat actors who target industrial control systems, their capabilities, their targeting patterns, and their techniques, is the foundation of a threat-informed OT security program.
Zero Trust Architecture for Industrial Control Systems: What Works and What Does Not
Zero Trust has become the dominant security architecture model in enterprise IT. Applying its principles to OT environments requires careful adaptation. Some Zero Trust concepts translate well, while others conflict with OT operational requirements and must be modified or abandoned.
OT Cybersecurity for the Water and Wastewater Sector: A Practical Guide
Water and wastewater utilities face a unique combination of high public health consequence, limited security resources, and aging infrastructure. The Oldsmar water treatment attack was a warning. Building defensible OT security programs for water utilities requires approaches tailored to the sector's specific constraints.
Air Gaps in OT: The Myth of Network Isolation
The air gap has been the cornerstone of OT security thinking for decades. The belief that industrial systems are safe because they are isolated has allowed organizations to defer security investment indefinitely. That belief is largely a myth, and a dangerous one.
Safety Instrumented Systems and Cybersecurity: Why TRITON Changed Everything
Safety Instrumented Systems are the last line of defense before industrial disasters. The TRITON attack proved that adversaries are willing to target those defenses directly. Understanding what happened, why it matters, and how to protect SIS from cyber threats is now a fundamental obligation for any organization operating safety-critical processes.
The OT Security Skills Gap: How to Build an Industrial Cybersecurity Team
The shortage of professionals who understand both industrial control systems and cybersecurity is one of the most critical constraints facing OT security programs today. Organizations that wait for the market to solve this problem will be waiting indefinitely.
OT Patch Management: Why You Cannot Just Patch Tuesday Your Way to Safety
The IT world has normalized monthly patch cycles and automated deployment. In OT environments, that approach can be more dangerous than the vulnerabilities it aims to fix. Understanding why OT patching is different, and building a program that actually works, requires rethinking the entire model.
SCADA Security in 2026: Threats, Trends, and Defensive Strategies
The SCADA threat landscape in 2026 looks nothing like it did five years ago. Named threat groups with ICS-specific capabilities, ransomware operators with OT expertise, and a decade of digital transformation have reshaped the risk equation for supervisory control systems.
The State of Backup and Recovery in Manufacturing: Key Findings from the 2026 Benchmark
New benchmark data from 100 IT and OT decision-makers reveals that manufacturing organizations face a critical gap between backup deployment and actual recovery capability. With 74% experiencing annual downtime, only 18% meeting recovery targets, and OT systems dangerously under-protected, the findings demand a fundamental shift from backup completion metrics to validated recovery readiness.
IT/OT Convergence: Security Challenges of Connected Industrial Networks
Digital transformation is merging IT and OT networks at an accelerating pace. Without deliberate security architecture, convergence creates attack paths from corporate email to turbine controllers. Here is what CISOs need to understand.
OT Security Monitoring: Why Your IT SIEM Is Not Enough for Industrial Environments
Enterprise SIEM platforms were designed for IT events. Monitoring OT environments demands protocol-aware detection, asset-centric baselines, and an understanding of physical process context that traditional security tools cannot provide.
Building an OT Security Compliance Roadmap: From Gap Analysis to Certification
A compliance roadmap transforms regulatory requirements into a phased, prioritized plan that strengthens your actual security posture while meeting certification objectives on a realistic timeline. Here is how to build one for IEC 62443, NIST, or OTCC.
Supply Chain Cybersecurity in OT: Managing Third-Party Risk in Industrial Environments
OT environments depend on a complex web of vendors, integrators, and component suppliers. A single compromised link in this supply chain can undermine years of security investment. From firmware integrity to integrator access controls, third-party risk management is essential for industrial cybersecurity.
Securing Remote Access to OT Environments: Best Practices for Industrial Operations
Remote access is one of the highest-risk vectors in OT security. Implementing secure remote access requires purpose-built architecture, strict controls, and continuous monitoring.
OT Asset Discovery: Building the Foundation of Industrial Cybersecurity
Most industrial facilities have more devices on their OT network than anyone realizes. OT asset discovery and visibility form the foundation of every effective industrial cybersecurity program.
Ransomware in OT Environments: Why Industrial Systems Are Prime Targets
Ransomware operators are increasingly targeting industrial and OT environments, where the cost of downtime makes organizations more likely to pay. Understanding the unique dynamics of OT ransomware is critical to building an effective defense.
NIST SP 800-82: A Practical Guide to Securing Industrial Control Systems
NIST SP 800-82 Rev 3 provides a comprehensive roadmap for securing industrial control systems. This guide breaks down its key recommendations and shows how to apply them in your OT environment.
IEC 62443 Explained: A Practical Guide for OT Security Teams
IEC 62443 is the leading international standard for industrial cybersecurity. This guide breaks down the Security Level framework, explains zones and conduits, and walks through conducting a gap assessment in real-world OT environments.
OT Cybersecurity 101: Why Industrial Networks Face Unique Threats
Industrial control systems were never designed with cybersecurity in mind. Understanding the fundamental differences between IT and OT security is the critical first step toward protecting your operational technology environment and the physical processes it controls.