🚀 Introducing the CloudSEK MCP Server! Read more Cybersecurity in manufacturing is the practice of protecting factories, production lines, and the industrial systems that run them from cyberattacks. It differs from cybersecurity in most other sectors in one decisive way: an attack on a manufacturer does not just expose data, it can stop production, damage equipment, and endanger people. That impact is why manufacturing has become the world's most-attacked industry. According to the IBM X-Force Threat Intelligence Index, manufacturing accounted for 27.7 percent of all cyberattacks in 2025, the most of any sector and the fifth consecutive year in the top spot. What makes manufacturing cybersecurity distinct is the mix of two worlds: the information technology (IT) systems that run the business and the operational technology (OT) that runs the plant floor. Securing both at once, across legacy machines never built for the internet, is the central challenge. This guide explains why manufacturers are targeted, why cybersecurity for manufacturing matters, how IT and OT differ, the top threats and real incidents that define the field, the frameworks that govern it, and how to secure production. Attackers choose targets by leverage, and manufacturing offers more of it than any other sector. Production cannot pause without immediate financial damage, with unplanned downtime costing manufacturers roughly $260,000 an hour on average, so attackers know a ransomware victim is likely to pay quickly to restore operations. That pressure shows in the numbers: Dragos attributes about 68 percent of all industrial ransomware to manufacturing, and the average manufacturing ransomware incident costs around $8.7 million, most of it from downtime rather than the ransom itself, which makes paying look cheaper than waiting even when it is not. Three structural factors compound the pressure. Manufacturers hold valuable intellectual property, from product designs to proprietary processes, and IBM