缓解依赖性中断的场地指南

DECEMBER2025 U.S. Department of Homeland SecurityCybersecurity and Infrastructure Security Agency CONTENTS Introduction.......................................................................................................1 Background and Context...........................................................................1 Overview of the Risk Environment.......................................................2 Understanding Dependenciesand Lifeline Sectors......................................................................................2 Lifeline Sectors and Vulnerabilities...................................................3 Energy...............................................................................................................4Water and Wastewater Systems...............................................................6Communications............................................................................................8Transportation Systems............................................................................10 Security Risk Assessments andAssociated Key Components...............................................................12 Continued Partnerships..........................................................................13 Key Terms..........................................................................................................14 Resources.........................................................................................................15 INTRODUCTION The United States faces a dynamic threat environment that challenges the security andsafety of critical infrastructure. This includes man-made threats and natural hazards thatcan significantly disrupt operations and impact many lives. Enhancing the protection andresilience of critical infrastructure is paramount to sustaining the American way of life.To achieve this goal, in addition to considering the immediate facility perimeter, ownersand/or operators of public gathering venues that host events must also account for theservices upon which the critical infrastructure depends. This is of particular importancefor services associated with the lifeline sectors—Energy, Water and Wastewater Systems,Communications, and Transportation Systems. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has developed this guideto provide baseline considerations to help critical infrastructure owners and/or operatorsmitigate the consequences of potential disruptions to a public gathering venue’s lifelinesectors. This guide is not all-encompassing and should be used in conjunction with otherCISA documents, such as theVenue Guide for Security Enhancements, to support acomprehensive view of protection and resilience. BACKGROUND AND CONTEXT CISA leads efforts to protect the nation’s cyber and physical infrastructure by providingclear guidelines and support for risk management, incident response, and infrastructureprotection. CISA developed theVenue Guide for Mitigating Dependency Disruptionsto equip public gathering venue owners and/or operators with effective strategies tosafeguard operations, mitigate vulnerabilities, and enhance preparedness. DISCLAIMER OVERVIEW OF THE RISKENVIRONMENT The 2025 Homeland Threat Assessment identifies nation-state cyberactors, domestic violence extremists, and foreign terrorist organizations asmajor threats to U.S. critical infrastructure and public gathering venues inthe coming years. Public gathering venue owners and/or operators mustmanage a dynamic and evolving set of risks that pose significant challengesto venue security, event management, and public safety. The essentialservices provided by the lifeline sectors—Energy, Water and WastewaterSystems, Communications, and Transportation Systems—are a particularlyimportant component of that risk. Public gathering venues must be able toidentify vulnerabilities related to lifeline sectors and services, and determineappropriate responses or mitigation strategies in the event of a disruption. UNDERSTANDINGDEPENDENCIESAND LIFELINE SECTORS Public gathering venue owners and/or operators rely on the lifeline sectorsto deliver essential services. When the availability of a service is disrupted,public gathering venue staff and personnel must ensure a plan is in placeto keep all staff and patrons safe, and to ensure the continued operation ofthe event. The services provided by the lifeline sectors—Energy, Water and WastewaterSystems, Communications, and Transportation Systems—are critical tothe operations of almost all other sectors, as well as each other, and arefundamental to the delivery of essential services related to immediatepublic health and safety. They are sometimes referred to as the criticalservices sectors, key sectors, lifeline interdependencies, or lifeline sectors.This document will henceforth refer to them as thelifeline sectors. Dependenciesare relationships of reliance within and among infrastructuresystems a