TXOne Networks Stellar provides patternless protection against known and unknown malware through machine learning and an ICS root of trust in operational technology environments. It operates offline and uses least privilege policies to prevent unauthorized access, while continuously monitoring systems to learn user interactions with ICS applications and automatically determining trust levels for file, system library, and registry access. Supporting legacy systems including Windows 2000 and XP, Stellar integrates Cyber-Physical System Detection and Response to prevent unexpected system changes and features multi-method threat prevention, operations lockdown, and trusted peripheral control to maintain operational stability and security.