DSDepartment of Homeland Security logo

Department of Homeland Security Unclaimed

Federal Agencies

www.dhs.gov

The Department of Homeland Security is the U.S. federal agency securing the nation from threats.

The Department of Homeland Security has a vital mission: to secure the nation from the threats we face. This work involves more than 260,000 employees across roles that span aviation and border security, emergency response, cybersecurity, and facility inspection. DHS's duties are wide-ranging, with a clear goal: keeping America safe.

The Department of Homeland Security has a vital mission: to secure the nation from the many threats we face.

What we offer

DHS.gov

Centralized source for updates on national security, immigration, and emergency preparedness.

DHS.gov

CISA.gov

Provides essential cybersecurity and infrastructure protection resources to enhance national security.

CISA.gov

FEMA.gov

Empowers users with disaster preparedness resources and recovery assistance updates.

FEMA.gov

FLETC.gov

Enhances law enforcement skills and supports national security through comprehensive training resources.

FLETC.gov

TSA.gov

Offers vital travel safety and security information for passengers.

TSA.gov

USCIS.gov

Provides essential resources and tools for immigration applicants and petitioners.

USCIS.gov

USCG.mil

Access vital maritime safety, mission details, and career resources through the official U.S. Coast Guard website.

USCG.mil

CBP.gov

Provides vital information on border security, customs, trade, and travel services.

CBP.gov

ICE.gov

Access comprehensive resources on immigration enforcement and homeland security investigations.

ICE.gov

SecretService.gov

Provides essential information on national leader protection and financial crime investigations.

SecretService.gov

Get.gov

Facilitates secure official domain registration for U.S. government entities.

Get.gov

National Terrorism Advisory System

Service

Informs the public about terrorism threats to enhance national safety.

www.dhs.gov/national-terrorism-advisory-system

Publications Library

Access a comprehensive collection of DHS publications to enhance transparency and information dissemination.

www.dhs.gov/publications-library

Market segments

Market size by segment

Growth potential (CAGR)

Border security and trade compliance

55 Billion USD5.2% CAGR

Capabilities that support border control, traveler facilitation, customs regulation compliance, and trade processing to secure ports of entry and enable lawful trade and travel.

Cybersecurity and infrastructure protection

155 Billion USD5.4% CAGR

Capabilities focused on reducing cyber risk, protecting critical infrastructure, securing government domains, and sharing guidance for resilience across sectors.

Emergency management and disaster response

140 Billion USD6.1% CAGR

Capabilities for preparedness, real-time incident response, recovery assistance, and coordination with state/local responders during natural disasters and major incidents.

Immigration services and enforcement

21.8 Billion USD7.7% CAGR

Capabilities that deliver immigration benefit services, application and eligibility tools, enforcement information, detention and removal operations, and trusted traveler management.

Law enforcement training and protective security

12.8 Billion USD5% CAGR

Capabilities that provide training, operational guidance, protective missions, and public-safety best practices for federal law enforcement and security personnel.

More information about our offering

DHS.gov

Official public website of the U.S. Department of Homeland Security, offering updates on national security, emergency preparedness, immigration, cybersecurity, and disaster response to inform and assist the public.

  • Follow National Security News
    Stay updated on national security matters, initiatives, and updates directly from the DHS.
  • Get Disaster Response Updates
    Stay informed about disaster management and response strategies, available resources, and up-to-date information.
  • Prepare for Emergencies
    Access guidelines and resources to help individuals and communities prepare for various emergencies.
  • Access Cybersecurity Resources
    Find comprehensive cybersecurity resources to safeguard personal and organizational information.
  • Learn About Immigration Processes
    Explore resources covering immigration policies, procedures, and assistance for applicants.
  • Engage with Local Initiatives
    Join community programs aimed at enhancing national security through local participation.

CISA.gov

Official site of the Cybersecurity and Infrastructure Security Agency, offering resources on cybersecurity, infrastructure protection, emergency communications, and risk management.

  • Enhances Cyber Resilience
    Offers a range of tools and best practices to mitigate risks, ensuring organizations can effectively manage cybersecurity threats.
  • Improves Crisis Communication
    Equips users with strategies and resources needed to maintain efficient communications during emergencies.
  • Safeguards Critical Infrastructure
    Provides insights and practices to protect vital systems from various threats and vulnerabilities.
  • Facilitates Risk Assessment
    Aids organizations in identifying, evaluating, and prioritizing risks, enhancing overall risk management strategies.

FEMA.gov

Official website of the Federal Emergency Management Agency; provides disaster preparedness tips, emergency response resources, recovery assistance, and updates on national relief efforts.

  • Enhances Community Resilience
    Provides comprehensive information and guidance to ensure individuals and communities are well-prepared for various disasters.
  • Ensures Effective Preparedness
    Delivers essential resources, guides, and tools to assist emergency responders and communities in managing disasters efficiently.
  • Supports Post-Disaster Recovery
    Helps individuals access critical recovery resources and assistance after a disaster, ensuring timely aid and support.
  • Keeps Public Informed
    Keeps users apprised of ongoing and upcoming relief efforts across the nation, fostering transparency and awareness.
  • Promotes Local Engagement
    Facilitates opportunities for individuals and organizations to participate actively in local preparedness and response initiatives.

FLETC.gov

Official site for the Federal Law Enforcement Training Centers; provides training resources for law enforcement to enhance skills, improve public safety, and support national security.

  • Enhances Law Enforcement Skills
    Provides targeted training resources designed specifically for law enforcement personnel to improve their operational efficiency and effectiveness.
  • Supports National Security
    Delivers training programs that align with national security goals, preparing officers to effectively respond to various security challenges.
  • Improves Public Safety
    Focuses on equipping officers with essential training aimed at safeguarding communities and enhancing public safety.
  • Facilitates Skills Improvement
    Encourages continuous professional development to ensure law enforcement officers maintain high standards of professionalism and expertise.

TSA.gov

Official site of the Transportation Security Administration; provides travel safety tips, security screening information, TSA PreCheck, prohibited items guidance, and real-time security updates.

  • Provides Immediate Alerts
    This feature keeps travelers informed of any immediate changes or threats to security at airports, ensuring that they can adjust their plans accordingly.
  • Informs Travelers About Dangerous Items
    This feature ensures travelers are aware of items that are prohibited from being carried onto flights, enhancing overall travel safety.
  • Explains Screening Procedures
    This feature informs travelers about what to expect during security screenings, reducing anxiety and ensuring compliance with protocols.
  • Enhances Traveler Preparedness
    This feature provides essential safety tips to ensure a smooth and secure travel experience.
  • Streamlines Airport Experience
    This feature explains how travelers can benefit from the TSA PreCheck program, providing quicker access through security checks.

USCIS.gov

USCIS resources on immigration programs, policies, and operational information; tools for applicants and petitioners, including calculators and lookup tools for applicants, petitioners, attorneys and others.

  • Informs About Policies
    USCIS.gov offers comprehensive information on various immigration programs, helping users understand their options and requirements.
  • Simplifies Application Process
    USCIS.gov provides various tools and calculators that help applicants navigate the immigration process more efficiently.
  • Clarifies Application Procedures
    USCIS.gov provides essential guidance to ensure applicants understand the operational aspects of immigration procedures.
  • Facilitates Information Access
    The website features tools that allow users and legal representatives to look up case statuses and other relevant information.

USCG.mil

Official site of the U.S. Coast Guard; information on missions, operations, news, careers, maritime safety, and security services.

  • Offers Insight Into Current Coast Guard Efforts
    Users can stay updated on various missions, including law enforcement, environmental protection, and search and rescue operations, thus enhancing public awareness and engagement.
  • Ensures Informed Maritime Operations
    This feature offers critical insights into safety regulations, navigational tips, and emergency protocols essential for safe maritime operations.
  • Provides Career Opportunities and Updates
    This feature offers comprehensive resources on career paths, application processes, and the latest news regarding the Coast Guard, assisting prospective candidates and interested citizens alike.

CBP.gov

Official site for U.S. Customs and Border Protection; information on border security, trade, travel, customs regulations, and trusted traveler programs.

  • Stay Informed About Border Policies
    Access up-to-date information regarding border security measures, ensuring travelers are informed of current policies.
  • Navigate Customs Procedures Easily
    Understand the necessary customs regulations to ensure compliance and facilitate smoother entry and exit.
  • Enhance Travel and Trade Compliance
    Gain insights into necessary steps for legal trade and travel, minimizing delays and issues.
  • Join Trusted Traveler Programs
    Learn about programs that expedite the travel process for eligible individuals, enhancing travel efficiency.
  • Utilize The Mobile App For Travel
    Download the CBP Home Mobile App to easily access travel assistance features and submit travel intents.
  • Navigate Self-Deportation Options
    Access resources that provide assistance for non-criminal aliens interested in self-deportation, including travel arrangements and financial incentives.

ICE.gov

Official site for U.S. Immigration and Customs Enforcement; information on immigration enforcement, homeland security investigations, detention and removal operations, and public safety resources.

  • View Enforcement Policies
    Stay informed about the latest immigration enforcement policies and the procedures that guide their implementation.
  • Access Comprehensive Information
    Get detailed insights into how detention and removal operations are conducted, including the processes involved.
  • Explore Investigation Data
    Access resources related to various homeland security investigations to better understand enforcement actions.
  • Access Public Safety Tools
    Utilize various tools and resources designed to enhance community safety through informed public engagement.
  • Navigate Easily
    Experience a user-friendly interface that simplifies the process of finding relevant information quickly.

SecretService.gov

Official site for the U.S. Secret Service; information on protecting the president and other leaders, safeguarding financial systems, and investigating financial crimes.

  • Informs About Ongoing Investigations
    The platform shares updates and details regarding financial crime investigations, ensuring transparency and accountability.
  • Ensures Safety of Key Officials
    Focuses on the protective measures implemented for national leaders, emphasizing national security and vigilance.
  • Safeguards National Financial Systems
    The site offers insights into measures taken to protect the financial sector against various threats, securing economic integrity.

Get.gov

GOV domain registrar for the United States government; provides official domain registration and related services.

  • Ensure Government Authenticity
    Guarantees that all registered domains meet government standards, ensuring public trust and security.
  • Streamline Domain Management
    Provides seamless domain management solutions, ensuring efficient oversight of government web presence.
  • Protect Sensitive Data
    Implements stringent security measures to safeguard government data during domain registration procedures.

National Terrorism Advisory System

The National Terrorism Advisory System (NTAS) provides timely, detailed information to the public, government agencies, public sector organizations, and first responders about terrorism threats. It issues public advisories to keep the community informed about ongoing threats and advises on actions to take.

  • Informs The Public
    NTAS provides critical advisory information to the public, ensuring they are aware and prepared in response to heightened threats.
  • Alerts Of Specific Threats
    NTAS alerts the public and relevant agencies of specific threats that may affect safety, allowing for immediate action and preparedness.
  • Shares Threat Information
    NTAS facilitates the distribution of essential threat intelligence to various stakeholders, aiding in preparedness and response actions.
  • Enhances Collaborative Efforts
    NTAS works alongside partners to implement effective strategies to address and mitigate terrorist threats through shared responsibility.

Publications Library

Central repository of DHS publications including guidance, reports, and other documents; searchable and categorized by topic.

  • Provides Centralized Document Access
    This central repository streamlines access to vital information, enabling users to find necessary documents efficiently.
  • Improves Access to Essential Policies
    Users can access crucial policy documents, aiding in understanding DHS regulations and requirements.
  • Simplifies Navigation
    This feature enhances user experience by enabling quick retrieval of information relevant to specific topics and timeframes.
  • Enhances Accessibility
    The intuitive layout allows users of all skill levels to navigate the repository effortlessly and find documents without hassle.
  • Ensures Current Information
    Users stay informed with the most relevant and up-to-date documents available through continuous updates to the library.

References

Methodology and sourcing behind the figures shown above.

Border security and trade compliance

Primary sizing driven by multiple market reports: global border security hardware/systems market is consistently reported at roughly USD 52–54 billion in 2025 and dominates the segment. Cross-border customs/trade-compliance software and related training/services are materially smaller (single-digit billions), growing at higher rates. Weighting the larger border-security base with faster-growing compliance software/services yields a combined market estimate of ~USD 55.0B (near-2025) and an aggregated CAGR ≈5.2% (midpoint between 4–6% border security growth and double-digit software CAGRs).

Cybersecurity and infrastructure protection

Multiple recent market-research reports in the search results place the global Critical Infrastructure Protection/Cybersecurity & infrastructure protection market in the ~USD 125–161 billion range (2024–2026) with forecast CAGRs from ~3.4% to 6.7%. I used the cluster of mid‑range, recent estimates (152–155B) as the best central estimate for current market size and selected a midpoint growth potential (5.4% CAGR) consistent with several sources' forecasts (including PersistenceMarketResearch) and the median of reported CAGR values.

Emergency management and disaster response

Synthesis of multiple industry reports: global 'incident & emergency management' and 'emergency/disaster response' market estimates cluster around USD 137–142B (2024–2025). I selected ~USD 140B as a rounded current global market size and adopted a CAGR of 6.1%, consistent with major forecasts (MarketsandMarkets, Fortune Business Insights). Variance across sources (MRFR, Persistence, Polaris) reflects different scope definitions (global vs. US, incident management vs. natural-disaster-specific), producing lower and higher CAGR estimates.

Immigration services and enforcement

Estimate anchored on a published market report for global immigration control systems (2025 market size USD 21.8B, projected growth). Public-sector enforcement spending (US) historically large—~USD 409B since DHS creation—indicates sustained demand for enforcement services and technology, supporting a mid-single-digit-to-high-single-digit CAGR (reported 7.7%).

Law enforcement training and protective security

Estimate derived by scaling the cited U.S. law-enforcement training market to a global figure using North America’s share of the broader public-safety/security market, and blending growth benchmarks. Coherent Market Insights reports the U.S. law enforcement training market at USD 4.16B (2026) with a 4.7% CAGR; Fortunebusinessinsights shows North America as ~32.5% of the global public safety & security market (USD 644.06B in 2025). Scaling 4.16B by 1/0.325 yields ~USD 12.8B global training/protective-security market. A conservative blended CAGR of ~5.0% was selected (near the U.S. training CAGR of 4.7%, below higher software/public-safety CAGRs of 8–10%), reflecting training-heavy, federal-focused spend and slower service adoption cycles.