Operational Technology Information Sharing and Analysis Center (OT-ISAC) is a threat information sharing hub for Critical Information Infrastructure. Using proven tools and technology, member companies can securely exchange threat intelligence on cyber, physical, systems vulnerability and supply chain security information in order to ensure resilient operations. A member company can anonymously share threat information with OT-ISAC analysts who further enrich and disseminate actionable alerts, intelligence and best practices for all community members to defend themselves and take mitigating action against malicious actors, their tools, and system exploits. OT-ISAC also partners with government, private vendors and other information sharing organizations to acquire and disseminate timely and relevant information for the resilience of member companies.