www.cisa.gov Open in urlscan Pro
2a02:26f0:dc:38f::447a  Public Scan

Form analysis
2 forms found in the DOM

<form class="gsc-search-box gsc-search-box-tools" accept-charset="utf-8">
  <table cellspacing="0" cellpadding="0" role="presentation" class="gsc-search-box">
    <tbody>
      <tr>
        <td class="gsc-input">
          <div class="gsc-input-box" id="gsc-iw-id1">
            <table cellspacing="0" cellpadding="0" role="presentation" id="gs_id50" class="gstl_50 gsc-input" style="width: 100%; padding: 0px;">
              <tbody>
                <tr>
                  <td id="gs_tti50" class="gsib_a"><input autocomplete="off" type="text" size="10" class="gsc-input" name="search" title="search" aria-label="search" id="gsc-i-id1" dir="ltr" spellcheck="false"
                      style="width: 100%; padding: 0px; border: none; margin: 0px; height: auto; outline: none;"></td>
                  <td class="gsib_b">
                    <div class="gsst_b" id="gs_st50" dir="ltr"><a class="gsst_a" href="javascript:void(0)" title="Clear search box" role="button" style="display: none;"><span class="gscb_a" id="gs_cb50" aria-hidden="true">×</span></a></div>
                  </td>
                </tr>
              </tbody>
            </table>
          </div>
        </td>
        <td class="gsc-search-button"><button class="gsc-search-button gsc-search-button-v2"><svg width="13" height="13" viewBox="0 0 13 13">
              <title>search</title>
              <path
                d="m4.8495 7.8226c0.82666 0 1.5262-0.29146 2.0985-0.87438 0.57232-0.58292 0.86378-1.2877 0.87438-2.1144 0.010599-0.82666-0.28086-1.5262-0.87438-2.0985-0.59352-0.57232-1.293-0.86378-2.0985-0.87438-0.8055-0.010599-1.5103 0.28086-2.1144 0.87438-0.60414 0.59352-0.8956 1.293-0.87438 2.0985 0.021197 0.8055 0.31266 1.5103 0.87438 2.1144 0.56172 0.60414 1.2665 0.8956 2.1144 0.87438zm4.4695 0.2115 3.681 3.6819-1.259 1.284-3.6817-3.7 0.0019784-0.69479-0.090043-0.098846c-0.87973 0.76087-1.92 1.1413-3.1207 1.1413-1.3553 0-2.5025-0.46363-3.4417-1.3909s-1.4088-2.0686-1.4088-3.4239c0-1.3553 0.4696-2.4966 1.4088-3.4239 0.9392-0.92727 2.0864-1.3969 3.4417-1.4088 1.3553-0.011889 2.4906 0.45771 3.406 1.4088 0.9154 0.95107 1.379 2.0924 1.3909 3.4239 0 1.2126-0.38043 2.2588-1.1413 3.1385l0.098834 0.090049z">
              </path>
            </svg></button></td>
        <td class="gsc-clear-button">
          <div class="gsc-clear-button" title="clear results">&nbsp;</div>
        </td>
      </tr>
    </tbody>
  </table>
</form>

<form class="gsc-search-box gsc-search-box-tools" accept-charset="utf-8">
  <table cellspacing="0" cellpadding="0" role="presentation" class="gsc-search-box">
    <tbody>
      <tr>
        <td class="gsc-input">
          <div class="gsc-input-box" id="gsc-iw-id2">
            <table cellspacing="0" cellpadding="0" role="presentation" id="gs_id51" class="gstl_51 gsc-input" style="width: 100%; padding: 0px;">
              <tbody>
                <tr>
                  <td id="gs_tti51" class="gsib_a"><input autocomplete="off" type="text" size="10" class="gsc-input" name="search" title="search" aria-label="search" id="gsc-i-id2" dir="ltr" spellcheck="false"
                      style="width: 100%; padding: 0px; border: none; margin: 0px; height: auto; outline: none;"></td>
                  <td class="gsib_b">
                    <div class="gsst_b" id="gs_st51" dir="ltr"><a class="gsst_a" href="javascript:void(0)" title="Clear search box" role="button" style="display: none;"><span class="gscb_a" id="gs_cb51" aria-hidden="true">×</span></a></div>
                  </td>
                </tr>
              </tbody>
            </table>
          </div>
        </td>
        <td class="gsc-search-button"><button class="gsc-search-button gsc-search-button-v2"><svg width="13" height="13" viewBox="0 0 13 13">
              <title>search</title>
              <path
                d="m4.8495 7.8226c0.82666 0 1.5262-0.29146 2.0985-0.87438 0.57232-0.58292 0.86378-1.2877 0.87438-2.1144 0.010599-0.82666-0.28086-1.5262-0.87438-2.0985-0.59352-0.57232-1.293-0.86378-2.0985-0.87438-0.8055-0.010599-1.5103 0.28086-2.1144 0.87438-0.60414 0.59352-0.8956 1.293-0.87438 2.0985 0.021197 0.8055 0.31266 1.5103 0.87438 2.1144 0.56172 0.60414 1.2665 0.8956 2.1144 0.87438zm4.4695 0.2115 3.681 3.6819-1.259 1.284-3.6817-3.7 0.0019784-0.69479-0.090043-0.098846c-0.87973 0.76087-1.92 1.1413-3.1207 1.1413-1.3553 0-2.5025-0.46363-3.4417-1.3909s-1.4088-2.0686-1.4088-3.4239c0-1.3553 0.4696-2.4966 1.4088-3.4239 0.9392-0.92727 2.0864-1.3969 3.4417-1.4088 1.3553-0.011889 2.4906 0.45771 3.406 1.4088 0.9154 0.95107 1.379 2.0924 1.3909 3.4239 0 1.2126-0.38043 2.2588-1.1413 3.1385l0.098834 0.090049z">
              </path>
            </svg></button></td>
        <td class="gsc-clear-button">
          <div class="gsc-clear-button" title="clear results">&nbsp;</div>
        </td>
      </tr>
    </tbody>
  </table>
</form>

Text Content

Skip to main content

An official website of the United States government

Here’s how you know

Here’s how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United
States.

Secure .gov websites use HTTPS
A lock (LockA locked padlock) or https:// means you’ve safely connected to the
.gov website. Share sensitive information only on official, secure websites.


Cybersecurity & Infrastructure Security Agency
America's Cyber Defense Agency

Search

×

search
 

Menu
Close
×

search
 

 * Topics
   Topics
   Cybersecurity Best Practices
   Cyber Threats and Advisories
   Critical Infrastructure Security and Resilience
   Election Security
   Emergency Communications
   Industrial Control Systems
   Information and Communications Technology Supply Chain Security
   Partnerships and Collaboration
   Physical Security
   Risk Management
   How can we help?
   GovernmentEducational InstitutionsIndustryState, Local, Tribal, and
   TerritorialIndividuals and FamiliesSmall and Medium Businesses
 * Spotlight
 * Resources & Tools
   Resources & Tools
   All Resources & Tools
   Services
   Programs
   Resources
   Training
   Groups
 * News & Events
   News & Events
   News
   Events
   Cybersecurity Alerts & Advisories
   Directives
   Request a CISA Speaker
   Congressional Testimony
 * Careers
   Careers
   Benefits & Perks
   HireVue Applicant Reasonable Accommodations Process
   Hiring
   Resume & Application Tips
   Students & Recent Graduates
   Veteran and Military Spouses
   Work @ CISA
 * About
   About
   Culture
   Divisions & Offices
   Regions
   Leadership
   Doing Business with CISA
   Contact Us
   Site Links
   CISA Administrative Subpoena
   Reporting Employee and Contractor Misconduct
   CISA GitHub

Report a Cyber Issue
Breadcrumb
 1. Home
 2. Topics
 3. Critical Infrastructure Security and Resilience

Share:




CRITICAL INFRASTRUCTURE SECTORS




CRITICAL INFRASTRUCTURE SECTORS

 * Chemical Sector
 * Commercial Facilities Sector
 * Communications Sector
 * Critical Manufacturing Sector
 * Dams Sector
 * Defense Industrial Base Sector
 * Emergency Services Sector
 * Energy Sector
 * Financial Services Sector
 * Food and Agriculture Sector
 * Government Facilities Sector
 * Healthcare and Public Health Sector
 * Information Technology Sector
 * Nuclear Reactors, Materials, and Waste Sector
 * Transportation Systems Sector
 * Water and Wastewater Sector

There are 16 critical infrastructure sectors whose assets, systems, and
networks, whether physical or virtual, are considered so vital to the United
States that their incapacitation or destruction would have a debilitating effect
on security, national economic security, national public health or safety, or
any combination thereof. Presidential Policy Directive 21 (PPD-21): Critical
Infrastructure Security and Resilience advances a national policy to strengthen
and maintain secure, functioning, and resilient critical infrastructure. This
directive supersedes Homeland Security Presidential Directive 7.


CRITICAL INFRASTRUCTURE SECTORS


CHEMICAL SECTOR

DHS was identified as the Chemical Sector Risk Management Agency (SRMA) in
Presidential Policy Directive (PPD) 21. CISA performs the Chemical Sector SRMA
responsibilities on behalf of DHS. CISA leads the Chemical Sector’s
public-private partnership and works with companies to develop tools and
resources that enhance the sector’s security and resilience.


COMMERCIAL FACILITIES SECTOR

The Commercial Facilities Sector protects spaces open to the general public
against coordinated attacks. CISA offers strategic direction across eight
subsectors to improve security and resilience in these locations.


COMMUNICATIONS SECTOR

The communications sector has evolved into a complex industry of terrestrial,
satellite, and wireless systems with many interdependencies. CISA works with
private sector stakeholders to implement the risk management framework to
protect all aspects of the communication sector.


CRITICAL MANUFACTURING SECTOR

CISA identifies, assesses, prioritizes, and protects manufacturing industries
with national significance to prevent and mitigate the impact of manmade or
natural disasters.


DAMS SECTOR

With more than 90,000 dams in the U.S., the Dams Sector delivers critical water
retention and control services. CISA works with sector partners to protect
assets from natural disasters, as well as human-caused and technological events.


DEFENSE INDUSTRIAL BASE SECTOR

Over 100,000 companies and subtractors supply materials, services, and
facilities to the U.S. military. The Defense Industrial Base Sector helps
mobilize, deploy, and sustain these military operations around the world.


EMERGENCY SERVICES SECTOR

Supporting millions of skilled personnel with physical and cyber resources, the
Emergency Services Sector helps save lives, protect property and the
environment, and assist in recovery efforts after emergencies and disasters.


ENERGY SECTOR

The energy sector protects a multifaceted web of electricity, oil, and natural
gas resources and assets to maintain steady energy supplies and ensure the
overall health and wellness of the nation.


FINANCIAL SERVICES SECTOR

By protecting financial institutions of all sizes from large-scale power
outages, natural disasters, and cyber-attacks, the Financial Services Sector
protects your financial assets as well as your ability to access and utilize
those assets.


FOOD AND AGRICULTURE SECTOR

The food and agriculture sector, including farms, restaurants, and food
manufacturing, processing, and storage facilities, is almost entirely
privately-owned. CISA provides guidance, resources, and collaboration with
interdependent sectors to protect against a range of risks.


GOVERNMENT FACILITIES SECTOR

Federal, state, local and tribunal government buildings and spaces have
differing accessibility restrictions and purposes. The Government Facilities
Sector helps these facilities identify their unique risk factors and protect
against potential attacks or issues.


HEALTHCARE AND PUBLIC HEALTH SECTOR

The Healthcare and Public Health Sector focuses on population health and
provides the response and recovery actions needed after large-scale hazards such
as terrorism, infection disease, and natural disasters.


INFORMATION TECHNOLOGY SECTOR

The nation’s growing dependency on information technology has made the
Information Technology Sector mission – to identify and protect against cyber
threats and vulnerabilities— more complex and important in the 21st century.


NUCLEAR REACTORS, MATERIALS, AND WASTE SECTOR

From the power reactors that provide electricity to millions of Americans, to
the medical isotopes used to treat cancer patients, America has an extensive
civilian nuclear infrastructure.


TRANSPORTATION SYSTEMS SECTOR

Moving millions of people and goods across the country every day, the
transportation systems sector is exposed to a limitless number of threats and
risks. CISA works to protect these systems and ensure a continuity of
operations.


WATER AND WASTEWATER SECTOR

Access to clean, healthy water is a requirement for all human activity.
Protecting the systems that provide water is of vital importance to the
stability and health of the nation and is the mission of the Water and
Wastewater Systems Sector.
Return to top
 * Topics
 * Spotlight
 * Resources & Tools
 * News & Events
 * Careers
 * About

Cybersecurity & Infrastructure Security Agency
 * Facebook
 * Twitter
 * LinkedIn
 * YouTube
 * Instagram
 * RSS

CISA Central 888-282-0870 Central@cisa.dhs.gov(link sends email)
DHS Seal
CISA.gov
An official website of the U.S. Department of Homeland Security
 * About CISA
 * Accessibility
 * Budget and Performance
 * DHS.gov
 * FOIA Requests
 * No FEAR Act
 * Office of Inspector General
 * Privacy Policy
 * The White House
 * USA.gov
 * Website Feedback