One of the most persistent challenges in Operational Technology (OT) cybersecurity is the reliance on legacy systems — industrial devices and control platforms that were designed decades ago, long before cybersecurity became a major concern.

• Many OT systems are decades old and were not designed with cybersecurity in mind.
• Updating/patching can be risky due to potential disruptions in critical operations.
• Vendors may no longer support legacy hardware/software.
• Lack of redundancy makes patch testing difficult.